155325531 has 32 divisors (see below), whose sum is σ = 219598848. Its totient is φ = 97528320.

The previous prime is 155325517. The next prime is 155325571. The reversal of 155325531 is 135523551.

It is a de Polignac number, because none of the positive numbers 2^k-155325531 is a prime.

It is a super-2 number, since 2×155325531² = 48252041160863922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155325571) 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 31 ways as a sum of consecutive naturals, for example, 930010 + ... + 930176.

It is an arithmetic number, because the mean of its divisors is an integer number (6862464).

Almost surely, 2^155325531 is an apocalyptic number.

155325531 is a deficient number, since it is larger than the sum of its proper divisors (64273317).

155325531 is a wasteful number, since it uses less digits than its factorization.

155325531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411.

The product of its digits is 11250, while the sum is 30.

The square root of 155325531 is about 12462.9663804409. The cubic root of 155325531 is about 537.5443263246.

The spelling of 155325531 in words is "one hundred fifty-five million, three hundred twenty-five thousand, five hundred thirty-one".