97972545 has 32 divisors (see below), whose sum is σ = 173435904. Its totient is φ = 46827200.

The previous prime is 97972529. The next prime is 97972573. The reversal of 97972545 is 54527979.

It is not a de Polignac number, because 97972545 - 2⁴ = 97972529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97972494 and 97972503.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7534 + ... + 15896.

It is an arithmetic number, because the mean of its divisors is an integer number (5419872).

Almost surely, 2^97972545 is an apocalyptic number.

It is an amenable number.

97972545 is a deficient number, since it is larger than the sum of its proper divisors (75463359).

97972545 is a wasteful number, since it uses less digits than its factorization.

97972545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8453.

The product of its digits is 793800, while the sum is 48.

The square root of 97972545 is about 9898.1081525714. The cubic root of 97972545 is about 461.0005709233. Note that the first 3 decimals are identical.

The spelling of 97972545 in words is "ninety-seven million, nine hundred seventy-two thousand, five hundred forty-five".