72556153 has 4 divisors (see below), whose sum is σ = 76824180. Its totient is φ = 68288128.

The previous prime is 72556147. The next prime is 72556157. The reversal of 72556153 is 35165527.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51652969 + 20903184 = 7187^2 + 4572^2 .

It is a cyclic number.

It is not a de Polignac number, because 72556153 - 2⁹ = 72555641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72556157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2133988 + ... + 2134021.

It is an arithmetic number, because the mean of its divisors is an integer number (19206045).

Almost surely, 2^72556153 is an apocalyptic number.

It is an amenable number.

72556153 is a deficient number, since it is larger than the sum of its proper divisors (4268027).

72556153 is a wasteful number, since it uses less digits than its factorization.

72556153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4268026.

The product of its digits is 31500, while the sum is 34.

The square root of 72556153 is about 8517.9899624266. The cubic root of 72556153 is about 417.0851710468.

The spelling of 72556153 in words is "seventy-two million, five hundred fifty-six thousand, one hundred fifty-three".