97607531 has 4 divisors (see below), whose sum is σ = 111551472. Its totient is φ = 83663592.

The previous prime is 97607527. The next prime is 97607537. The reversal of 97607531 is 13570679.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13570679 = 1277 ⋅10627.

It is a cyclic number.

It is not a de Polignac number, because 97607531 - 2² = 97607527 is a prime.

It is a super-2 number, since 2×97607531² = 19054460215831922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97607537) 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 3 ways as a sum of consecutive naturals, for example, 6971960 + ... + 6971973.

It is an arithmetic number, because the mean of its divisors is an integer number (27887868).

Almost surely, 2^97607531 is an apocalyptic number.

97607531 is a deficient number, since it is larger than the sum of its proper divisors (13943941).

97607531 is a wasteful number, since it uses less digits than its factorization.

97607531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13943940.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 97607531 is about 9879.6523724269. The cubic root of 97607531 is about 460.4273454641.

The spelling of 97607531 in words is "ninety-seven million, six hundred seven thousand, five hundred thirty-one".