52217964 has 18 divisors (see below), whose sum is σ = 131995500. Its totient is φ = 17405976.

The previous prime is 52217959. The next prime is 52218007. The reversal of 52217964 is 46971225.

52217964 is a `hidden beast` number, since 522 + 1 + 79 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1450499 = 52217964 / (5 + 2 + 2 + 1 + 7 + 9 + 6 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 725214 + ... + 725285.

Almost surely, 2^52217964 is an apocalyptic number.

It is an amenable number.

52217964 is an abundant number, since it is smaller than the sum of its proper divisors (79777536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52217964 is a wasteful number, since it uses less digits than its factorization.

52217964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450509 (or 1450504 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 52217964 is about 7226.1998311699. The cubic root of 52217964 is about 373.7718970926.

The spelling of 52217964 in words is "fifty-two million, two hundred seventeen thousand, nine hundred sixty-four".