97423515 has 144 divisors (see below), whose sum is σ = 218956608. Its totient is φ = 39739392.

The previous prime is 97423463. The next prime is 97423519. The reversal of 97423515 is 51532479.

It is not a de Polignac number, because 97423515 - 2⁷ = 97423387 is a prime.

Its product of digits (37800) is a multiple of the sum of its prime divisors (168).

It is a self number, because there is not a number n which added to its sum of digits gives 97423515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97423519) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 862099 + ... + 862211.

It is an arithmetic number, because the mean of its divisors is an integer number (1520532).

Almost surely, 2^97423515 is an apocalyptic number.

97423515 is an abundant number, since it is smaller than the sum of its proper divisors (121533093).

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

97423515 is a wasteful number, since it uses less digits than its factorization.

97423515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 168 counting only the distinct ones).

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

The square root of 97423515 is about 9870.3351006944. The cubic root of 97423515 is about 460.1378210220.

The spelling of 97423515 in words is "ninety-seven million, four hundred twenty-three thousand, five hundred fifteen".