72258551 has 12 divisors (see below), whose sum is σ = 79074576. Its totient is φ = 65799360.

The previous prime is 72258503. The next prime is 72258559. The reversal of 72258551 is 15585227.

It is not a de Polignac number, because 72258551 - 2¹⁰ = 72257527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72258559) 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, 14126 + ... + 18548.

It is an arithmetic number, because the mean of its divisors is an integer number (6589548).

Almost surely, 2^72258551 is an apocalyptic number.

72258551 is a deficient number, since it is larger than the sum of its proper divisors (6816025).

72258551 is a wasteful number, since it uses less digits than its factorization.

72258551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4502 (or 4471 counting only the distinct ones).

The product of its digits is 28000, while the sum is 35.

The square root of 72258551 is about 8500.5029851180. The cubic root of 72258551 is about 416.5141398700.

The spelling of 72258551 in words is "seventy-two million, two hundred fifty-eight thousand, five hundred fifty-one".