152066321 has 4 divisors (see below), whose sum is σ = 165890544. Its totient is φ = 138242100.

The previous prime is 152066303. The next prime is 152066323. The reversal of 152066321 is 123660251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-152066321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152066323) 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, 6912095 + ... + 6912116.

It is an arithmetic number, because the mean of its divisors is an integer number (41472636).

Almost surely, 2^152066321 is an apocalyptic number.

152066321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

152066321 is a deficient number, since it is larger than the sum of its proper divisors (13824223).

152066321 is a wasteful number, since it uses less digits than its factorization.

152066321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13824222.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 152066321 is about 12331.5173843287. The cubic root of 152066321 is about 533.7579373467.

The spelling of 152066321 in words is "one hundred fifty-two million, sixty-six thousand, three hundred twenty-one".