97472539 has 4 divisors (see below), whose sum is σ = 99849960. Its totient is φ = 95095120.

The previous prime is 97472537. The next prime is 97472561. The reversal of 97472539 is 93527479.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97472539 - 2¹ = 97472537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97472537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188649 + ... + 1188730.

It is an arithmetic number, because the mean of its divisors is an integer number (24962490).

Almost surely, 2^97472539 is an apocalyptic number.

97472539 is a deficient number, since it is larger than the sum of its proper divisors (2377421).

97472539 is a wasteful number, since it uses less digits than its factorization.

97472539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377420.

The product of its digits is 476280, while the sum is 46.

The square root of 97472539 is about 9872.8181893520. The cubic root of 97472539 is about 460.2149892973.

The spelling of 97472539 in words is "ninety-seven million, four hundred seventy-two thousand, five hundred thirty-nine".