57215073 has 8 divisors (see below), whose sum is σ = 77580000. Its totient is φ = 37496768.

The previous prime is 57215071. The next prime is 57215077. The reversal of 57215073 is 37051275.

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

It is a cyclic number.

It is not a de Polignac number, because 57215073 - 2¹ = 57215071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57215073.

It is not an unprimeable number, because it can be changed into a prime (57215071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161448 + ... + 161801.

It is an arithmetic number, because the mean of its divisors is an integer number (9697500).

Almost surely, 2^57215073 is an apocalyptic number.

It is an amenable number.

57215073 is a deficient number, since it is larger than the sum of its proper divisors (20364927).

57215073 is a wasteful number, since it uses less digits than its factorization.

57215073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323311.

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 57215073 is about 7564.0645819559. The cubic root of 57215073 is about 385.3335457715. Note that the first 3 decimals are identical.

The spelling of 57215073 in words is "fifty-seven million, two hundred fifteen thousand, seventy-three".