72554865 has 32 divisors (see below), whose sum is σ = 118855296. Its totient is φ = 37785600.

The previous prime is 72554851. The next prime is 72554873. The reversal of 72554865 is 56845527.

It is not a de Polignac number, because 72554865 - 2¹² = 72550769 is a prime.

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, 125457 + ... + 126033.

It is an arithmetic number, because the mean of its divisors is an integer number (3714228).

Almost surely, 2^72554865 is an apocalyptic number.

It is an amenable number.

72554865 is a deficient number, since it is larger than the sum of its proper divisors (46300431).

72554865 is a wasteful number, since it uses less digits than its factorization.

72554865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769.

The product of its digits is 336000, while the sum is 42.

The square root of 72554865 is about 8517.9143573999. The cubic root of 72554865 is about 417.0827030325.

The spelling of 72554865 in words is "seventy-two million, five hundred fifty-four thousand, eight hundred sixty-five".