97531536 has 20 divisors (see below), whose sum is σ = 251956592. Its totient is φ = 32510496.

The previous prime is 97531531. The next prime is 97531537. The reversal of 97531536 is 63513579.

It is a junction number, because it is equal to n+sod(n) for n = 97531494 and 97531503.

It is not an unprimeable number, because it can be changed into a prime (97531531) 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 3 ways as a sum of consecutive naturals, for example, 1015906 + ... + 1016001.

Almost surely, 2^97531536 is an apocalyptic number.

It is an amenable number.

97531536 is an abundant number, since it is smaller than the sum of its proper divisors (154425056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97531536 is a wasteful number, since it uses less digits than its factorization.

97531536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031918 (or 2031912 counting only the distinct ones).

The product of its digits is 85050, while the sum is 39.

The square root of 97531536 is about 9875.8055873939. The cubic root of 97531536 is about 460.3078216919.

The spelling of 97531536 in words is "ninety-seven million, five hundred thirty-one thousand, five hundred thirty-six".