72571357 has 4 divisors (see below), whose sum is σ = 73801440. Its totient is φ = 71341276.

The previous prime is 72571327. The next prime is 72571439. The reversal of 72571357 is 75317527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72571357 - 2¹⁵ = 72538589 is a prime.

It is a super-3 number, since 3×72571357³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72571307) 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, 614953 + ... + 615070.

It is an arithmetic number, because the mean of its divisors is an integer number (18450360).

Almost surely, 2^72571357 is an apocalyptic number.

It is an amenable number.

72571357 is a deficient number, since it is larger than the sum of its proper divisors (1230083).

72571357 is a wasteful number, since it uses less digits than its factorization.

72571357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230082.

The product of its digits is 51450, while the sum is 37.

The square root of 72571357 is about 8518.8823797491. The cubic root of 72571357 is about 417.1143021395.

The spelling of 72571357 in words is "seventy-two million, five hundred seventy-one thousand, three hundred fifty-seven".