72552897 has 12 divisors (see below), whose sum is σ = 105006564. Its totient is φ = 48272640.

The previous prime is 72552881. The next prime is 72552901. The reversal of 72552897 is 79825527.

It is a happy number.

72552897 is a `hidden beast` number, since 7 + 2 + 552 + 8 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25644096 + 46908801 = 5064^2 + 6849^2 .

It is not a de Polignac number, because 72552897 - 2⁴ = 72552881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72552497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3048 + ... + 12425.

It is an arithmetic number, because the mean of its divisors is an integer number (8750547).

Almost surely, 2^72552897 is an apocalyptic number.

It is an amenable number.

72552897 is a deficient number, since it is larger than the sum of its proper divisors (32453667).

72552897 is a wasteful number, since it uses less digits than its factorization.

72552897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16000 (or 15997 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 72552897 is about 8517.7988353799. The cubic root of 72552897 is about 417.0789319728.

The spelling of 72552897 in words is "seventy-two million, five hundred fifty-two thousand, eight hundred ninety-seven".