52640379 has 24 divisors (see below), whose sum is σ = 83179200. Its totient is φ = 31814640.

The previous prime is 52640363. The next prime is 52640389. The reversal of 52640379 is 97304625.

52640379 is a `hidden beast` number, since 5 + 2 + 640 + 3 + 7 + 9 = 666.

It is not a de Polignac number, because 52640379 - 2⁴ = 52640363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52640309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60852 + ... + 61710.

It is an arithmetic number, because the mean of its divisors is an integer number (3465800).

Almost surely, 2^52640379 is an apocalyptic number.

52640379 is a deficient number, since it is larger than the sum of its proper divisors (30538821).

52640379 is a wasteful number, since it uses less digits than its factorization.

52640379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495 (or 1492 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 52640379 is about 7255.3689775228. The cubic root of 52640379 is about 374.7770621562. Note that the first 3 decimals are identical.

The spelling of 52640379 in words is "fifty-two million, six hundred forty thousand, three hundred seventy-nine".