51572117 has 8 divisors (see below), whose sum is σ = 53138592. Its totient is φ = 50014800.

The previous prime is 51572107. The next prime is 51572119. The reversal of 51572117 is 71127515.

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 51572117 - 2²⁴ = 34794901 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51572117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51572119) 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, 10142 + ... + 14352.

It is an arithmetic number, because the mean of its divisors is an integer number (6642324).

Almost surely, 2^51572117 is an apocalyptic number.

It is an amenable number.

51572117 is a deficient number, since it is larger than the sum of its proper divisors (1566475).

51572117 is a wasteful number, since it uses less digits than its factorization.

51572117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4579.

The product of its digits is 2450, while the sum is 29.

The square root of 51572117 is about 7181.3729188784. The cubic root of 51572117 is about 372.2245267483.

The spelling of 51572117 in words is "fifty-one million, five hundred seventy-two thousand, one hundred seventeen".