52116520 has 32 divisors (see below), whose sum is σ = 117573120. Its totient is φ = 20791360.

The previous prime is 52116517. The next prime is 52116523. The reversal of 52116520 is 2561125.

It is an interprime number because it is at equal distance from previous prime (52116517) and next prime (52116523).

It is a super-2 number, since 2×52116520² = 5432263313820800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52116491 and 52116500.

It is not an unprimeable number, because it can be changed into a prime (52116523) 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, 15729 + ... + 18751.

It is an arithmetic number, because the mean of its divisors is an integer number (3674160).

Almost surely, 2^52116520 is an apocalyptic number.

It is an amenable number.

52116520 is an abundant number, since it is smaller than the sum of its proper divisors (65456600).

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

52116520 is a wasteful number, since it uses less digits than its factorization.

52116520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3465 (or 3461 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 52116520 is about 7219.1772384393. The cubic root of 52116520 is about 373.5296975778.

Adding to 52116520 its reverse (2561125), we get a palindrome (54677645).

The spelling of 52116520 in words is "fifty-two million, one hundred sixteen thousand, five hundred twenty".