72958555 has 4 divisors (see below), whose sum is σ = 87550272. Its totient is φ = 58366840.

The previous prime is 72958541. The next prime is 72958597. The reversal of 72958555 is 55585927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55585927 = 241 ⋅230647.

It is not a de Polignac number, because 72958555 - 2²¹ = 70861403 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7295851 + ... + 7295860.

It is an arithmetic number, because the mean of its divisors is an integer number (21887568).

Almost surely, 2^72958555 is an apocalyptic number.

72958555 is a deficient number, since it is larger than the sum of its proper divisors (14591717).

72958555 is a wasteful number, since it uses less digits than its factorization.

72958555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14591716.

The product of its digits is 630000, while the sum is 46.

The square root of 72958555 is about 8541.5780158001. The cubic root of 72958555 is about 417.8548121024.

The spelling of 72958555 in words is "seventy-two million, nine hundred fifty-eight thousand, five hundred fifty-five".