72156051 has 36 divisors (see below), whose sum is σ = 115524864. Its totient is φ = 43364640.

The previous prime is 72156017. The next prime is 72156059. The reversal of 72156051 is 15065127.

It is not a de Polignac number, because 72156051 - 2¹⁴ = 72139667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72156059) 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 35 ways as a sum of consecutive naturals, for example, 188206 + ... + 188588.

It is an arithmetic number, because the mean of its divisors is an integer number (3209024).

Almost surely, 2^72156051 is an apocalyptic number.

72156051 is a deficient number, since it is larger than the sum of its proper divisors (43368813).

72156051 is a wasteful number, since it uses less digits than its factorization.

72156051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 72156051 is about 8494.4717905235. The cubic root of 72156051 is about 416.3171025116.

The spelling of 72156051 in words is "seventy-two million, one hundred fifty-six thousand, fifty-one".