72857541 has 16 divisors (see below), whose sum is σ = 101396160. Its totient is φ = 46475520.

The previous prime is 72857531. The next prime is 72857557. The reversal of 72857541 is 14575827.

It is not a de Polignac number, because 72857541 - 2⁵ = 72857509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72857541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72857531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6126 + ... + 13536.

It is an arithmetic number, because the mean of its divisors is an integer number (6337260).

Almost surely, 2^72857541 is an apocalyptic number.

It is an amenable number.

72857541 is a deficient number, since it is larger than the sum of its proper divisors (28538619).

72857541 is a wasteful number, since it uses less digits than its factorization.

72857541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7556.

The product of its digits is 78400, while the sum is 39.

The square root of 72857541 is about 8535.6628916564. The cubic root of 72857541 is about 417.6618775380.

The spelling of 72857541 in words is "seventy-two million, eight hundred fifty-seven thousand, five hundred forty-one".