72658051 has 4 divisors (see below), whose sum is σ = 76932072. Its totient is φ = 68384032.

The previous prime is 72658049. The next prime is 72658057. The reversal of 72658051 is 15085627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15085627 = 2411 ⋅6257.

It is a cyclic number.

It is not a de Polignac number, because 72658051 - 2¹ = 72658049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72657998 and 72658016.

It is not an unprimeable number, because it can be changed into a prime (72658057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2136985 + ... + 2137018.

It is an arithmetic number, because the mean of its divisors is an integer number (19233018).

Almost surely, 2^72658051 is an apocalyptic number.

72658051 is a deficient number, since it is larger than the sum of its proper divisors (4274021).

72658051 is a wasteful number, since it uses less digits than its factorization.

72658051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274020.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 72658051 is about 8523.9692045432. The cubic root of 72658051 is about 417.2803314513.

The spelling of 72658051 in words is "seventy-two million, six hundred fifty-eight thousand, fifty-one".