72255057 has 12 divisors (see below), whose sum is σ = 112069296. Its totient is φ = 41288520.

The previous prime is 72255047. The next prime is 72255061. The reversal of 72255057 is 75055227.

It is not a de Polignac number, because 72255057 - 2⁴ = 72255041 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (72255047) 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 11 ways as a sum of consecutive naturals, for example, 245619 + ... + 245912.

It is an arithmetic number, because the mean of its divisors is an integer number (9339108).

Almost surely, 2^72255057 is an apocalyptic number.

It is an amenable number.

72255057 is a deficient number, since it is larger than the sum of its proper divisors (39814239).

72255057 is a wasteful number, since it uses less digits than its factorization.

72255057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491548 (or 491541 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 33.

The square root of 72255057 is about 8500.2974653832. The cubic root of 72255057 is about 416.5074263676.

The spelling of 72255057 in words is "seventy-two million, two hundred fifty-five thousand, fifty-seven".