155054521 has 8 divisors (see below), whose sum is σ = 158454144. Its totient is φ = 151672560.

The previous prime is 155054519. The next prime is 155054539. The reversal of 155054521 is 125450551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155054521 - 2¹ = 155054519 is a prime.

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 155054521.

It is not an unprimeable number, because it can be changed into a prime (155054621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14176 + ... + 22606.

It is an arithmetic number, because the mean of its divisors is an integer number (19806768).

Almost surely, 2^155054521 is an apocalyptic number.

It is an amenable number.

155054521 is a deficient number, since it is larger than the sum of its proper divisors (3399623).

155054521 is an equidigital number, since it uses as much as digits as its factorization.

155054521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8831.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 155054521 is about 12452.0890215257. The cubic root of 155054521 is about 537.2315108332.

The spelling of 155054521 in words is "one hundred fifty-five million, fifty-four thousand, five hundred twenty-one".