97531530 has 32 divisors (see below), whose sum is σ = 234391104. Its totient is φ = 25973376.

The previous prime is 97531529. The next prime is 97531531. The reversal of 97531530 is 3513579.

It is an interprime number because it is at equal distance from previous prime (97531529) and next prime (97531531).

It is a junction number, because it is equal to n+sod(n) for n = 97531491 and 97531500.

It is not an unprimeable number, because it can be changed into a prime (97531531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26694 + ... + 30126.

It is an arithmetic number, because the mean of its divisors is an integer number (7324722).

Almost surely, 2^97531530 is an apocalyptic number.

97531530 is an abundant number, since it is smaller than the sum of its proper divisors (136859574).

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

97531530 is a wasteful number, since it uses less digits than its factorization.

97531530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4390.

The product of its (nonzero) digits is 14175, while the sum is 33.

The square root of 97531530 is about 9875.8052836212. The cubic root of 97531530 is about 460.3078122528.

The spelling of 97531530 in words is "ninety-seven million, five hundred thirty-one thousand, five hundred thirty".