97715530 has 16 divisors (see below), whose sum is σ = 191877984. Its totient is φ = 35532880.

The previous prime is 97715489. The next prime is 97715539. The reversal of 97715530 is 3551779.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 97715530.

It is not an unprimeable number, because it can be changed into a prime (97715539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444052 + ... + 444271.

It is an arithmetic number, because the mean of its divisors is an integer number (11992374).

Almost surely, 2^97715530 is an apocalyptic number.

97715530 is a deficient number, since it is larger than the sum of its proper divisors (94162454).

97715530 is a wasteful number, since it uses less digits than its factorization.

97715530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888341.

The product of its (nonzero) digits is 33075, while the sum is 37.

The square root of 97715530 is about 9885.1165901066. The cubic root of 97715530 is about 460.5970979541.

The spelling of 97715530 in words is "ninety-seven million, seven hundred fifteen thousand, five hundred thirty".