52421516 has 24 divisors (see below), whose sum is σ = 105929376. Its totient is φ = 22233600.

The previous prime is 52421483. The next prime is 52421521. The reversal of 52421516 is 61512425.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6935 + ... + 12366.

It is an arithmetic number, because the mean of its divisors is an integer number (4413724).

Almost surely, 2^52421516 is an apocalyptic number.

It is an amenable number.

52421516 is an abundant number, since it is smaller than the sum of its proper divisors (53507860).

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

52421516 is a wasteful number, since it uses less digits than its factorization.

52421516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19409 (or 19407 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 52421516 is about 7240.2704369381. The cubic root of 52421516 is about 374.2569368880.

Subtracting 52421516 from its reverse (61512425), we obtain a palindrome (9090909).

The spelling of 52421516 in words is "fifty-two million, four hundred twenty-one thousand, five hundred sixteen".