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152214551 = 499930449
BaseRepresentation
bin10010001001010…
…01110000010111
3101121102022002222
421010221300113
5302431331201
623034252555
73525542126
oct1104516027
9347368088
10152214551
1178a15055
1242b8715b
13256c5ba8
1416303abd
15d56a91b
hex9129c17

152214551 has 4 divisors (see below), whose sum is σ = 152250000. Its totient is φ = 152179104.

The previous prime is 152214523. The next prime is 152214571. The reversal of 152214551 is 155412251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155412251 = 1146713553.

It is a cyclic number.

It is not a de Polignac number, because 152214551 - 26 = 152214487 is a prime.

It is a super-2 number, since 2×1522145512 = 46338539072263202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 152214551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152214511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10226 + ... + 20223.

It is an arithmetic number, because the mean of its divisors is an integer number (38062500).

Almost surely, 2152214551 is an apocalyptic number.

152214551 is a deficient number, since it is larger than the sum of its proper divisors (35449).

152214551 is an equidigital number, since it uses as much as digits as its factorization.

152214551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35448.

The product of its digits is 2000, while the sum is 26.

The square root of 152214551 is about 12337.5261296582. The cubic root of 152214551 is about 533.9313117989.

The spelling of 152214551 in words is "one hundred fifty-two million, two hundred fourteen thousand, five hundred fifty-one".

Divisors: 1 4999 30449 152214551