72396051 has 24 divisors (see below), whose sum is σ = 119462400. Its totient is φ = 38185056.

The previous prime is 72396043. The next prime is 72396059. The reversal of 72396051 is 15069327.

It is an interprime number because it is at equal distance from previous prime (72396043) and next prime (72396059).

It is not a de Polignac number, because 72396051 - 2³ = 72396043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72396059) 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 23 ways as a sum of consecutive naturals, for example, 6651 + ... + 13748.

It is an arithmetic number, because the mean of its divisors is an integer number (4977600).

Almost surely, 2^72396051 is an apocalyptic number.

72396051 is a deficient number, since it is larger than the sum of its proper divisors (47066349).

72396051 is a wasteful number, since it uses less digits than its factorization.

72396051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20435 (or 20422 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 72396051 is about 8508.5868979520. The cubic root of 72396051 is about 416.7781658581.

The spelling of 72396051 in words is "seventy-two million, three hundred ninety-six thousand, fifty-one".