52121612 has 6 divisors (see below), whose sum is σ = 91212828. Its totient is φ = 26060804.

The previous prime is 52121599. The next prime is 52121621. The reversal of 52121612 is 21612125.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6515198 + ... + 6515205.

It is an arithmetic number, because the mean of its divisors is an integer number (15202138).

Almost surely, 2^52121612 is an apocalyptic number.

It is an amenable number.

52121612 is a deficient number, since it is larger than the sum of its proper divisors (39091216).

52121612 is a wasteful number, since it uses less digits than its factorization.

52121612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13030407 (or 13030405 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 52121612 is about 7219.5299015933. The cubic root of 52121612 is about 373.5418623148.

Adding to 52121612 its reverse (21612125), we get a palindrome (73733737).

The spelling of 52121612 in words is "fifty-two million, one hundred twenty-one thousand, six hundred twelve".