152605521 has 12 divisors (see below), whose sum is σ = 222571648. Its totient is φ = 100748664.

The previous prime is 152605507. The next prime is 152605547. The reversal of 152605521 is 125506251.

152605521 is a `hidden beast` number, since 1 + 5 + 2 + 605 + 52 + 1 = 666.

It is not a de Polignac number, because 152605521 - 2⁷ = 152605393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152605561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81385 + ... + 83238.

Almost surely, 2^152605521 is an apocalyptic number.

It is an amenable number.

152605521 is a deficient number, since it is larger than the sum of its proper divisors (69966127).

152605521 is a wasteful number, since it uses less digits than its factorization.

152605521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164732 (or 164729 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 152605521 is about 12353.3607168252. The cubic root of 152605521 is about 534.3880632489.

The spelling of 152605521 in words is "one hundred fifty-two million, six hundred five thousand, five hundred twenty-one".