97542531 has 12 divisors (see below), whose sum is σ = 143893152. Its totient is φ = 63644496.

The previous prime is 97542499. The next prime is 97542541. The reversal of 97542531 is 13524579.

It is not a de Polignac number, because 97542531 - 2⁵ = 97542499 is a prime.

It is a super-2 number, since 2×97542531² = 19029090707771922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97542541) 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, 114876 + ... + 115721.

It is an arithmetic number, because the mean of its divisors is an integer number (11991096).

Almost surely, 2^97542531 is an apocalyptic number.

97542531 is a deficient number, since it is larger than the sum of its proper divisors (46350621).

97542531 is a wasteful number, since it uses less digits than its factorization.

97542531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230650 (or 230647 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 97542531 is about 9876.3622351552. The cubic root of 97542531 is about 460.3251183003.

The spelling of 97542531 in words is "ninety-seven million, five hundred forty-two thousand, five hundred thirty-one".