52313661 has 32 divisors (see below), whose sum is σ = 82256640. Its totient is φ = 32788800.

The previous prime is 52313659. The next prime is 52313683. The reversal of 52313661 is 16631325.

52313661 is a `hidden beast` number, since 523 + 136 + 6 + 1 = 666.

It is not a de Polignac number, because 52313661 - 2¹ = 52313659 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52313161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37191 + ... + 38571.

It is an arithmetic number, because the mean of its divisors is an integer number (2570520).

Almost surely, 2^52313661 is an apocalyptic number.

It is an amenable number.

52313661 is a deficient number, since it is larger than the sum of its proper divisors (29942979).

52313661 is a wasteful number, since it uses less digits than its factorization.

52313661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474 (or 1468 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 52313661 is about 7232.8183303606. The cubic root of 52313661 is about 374.0000881733. Note that the first 4 decimals are identical.

Adding to 52313661 its reverse (16631325), we get a palindrome (68944986).

The spelling of 52313661 in words is "fifty-two million, three hundred thirteen thousand, six hundred sixty-one".