57216235 has 8 divisors (see below), whose sum is σ = 70874496. Its totient is φ = 44296320.

The previous prime is 57216227. The next prime is 57216251. The reversal of 57216235 is 53261275.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57216235 - 2³ = 57216227 is a prime.

It is a super-3 number, since 3×57216235³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57216197 and 57216206.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184414 + ... + 184723.

It is an arithmetic number, because the mean of its divisors is an integer number (8859312).

Almost surely, 2^57216235 is an apocalyptic number.

57216235 is a deficient number, since it is larger than the sum of its proper divisors (13658261).

57216235 is a wasteful number, since it uses less digits than its factorization.

57216235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369173.

The product of its digits is 12600, while the sum is 31.

The square root of 57216235 is about 7564.1413921211. The cubic root of 57216235 is about 385.3361543763.

It can be divided in two parts, 572 and 16235, that added together give a 5-th power (16807 = 7⁵).

The spelling of 57216235 in words is "fifty-seven million, two hundred sixteen thousand, two hundred thirty-five".