52151817 has 4 divisors (see below), whose sum is σ = 69535760. Its totient is φ = 34767876.

The previous prime is 52151809. The next prime is 52151821. The reversal of 52151817 is 71815125.

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 not a de Polignac number, because 52151817 - 2³ = 52151809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52151807) 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, 8691967 + ... + 8691972.

It is an arithmetic number, because the mean of its divisors is an integer number (17383940).

Almost surely, 2^52151817 is an apocalyptic number.

It is an amenable number.

52151817 is a deficient number, since it is larger than the sum of its proper divisors (17383943).

52151817 is a wasteful number, since it uses less digits than its factorization.

52151817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17383942.

The product of its digits is 2800, while the sum is 30.

The square root of 52151817 is about 7221.6214938198. The cubic root of 52151817 is about 373.6140054733.

The spelling of 52151817 in words is "fifty-two million, one hundred fifty-one thousand, eight hundred seventeen".