50640404 has 6 divisors (see below), whose sum is σ = 88620714. Its totient is φ = 25320200.

The previous prime is 50640397. The next prime is 50640413. The reversal of 50640404 is 40404605.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 44890000 + 5750404 = 6700^2 + 2398^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 50640404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6330047 + ... + 6330054.

It is an arithmetic number, because the mean of its divisors is an integer number (14770119).

Almost surely, 2^50640404 is an apocalyptic number.

It is an amenable number.

50640404 is a deficient number, since it is larger than the sum of its proper divisors (37980310).

50640404 is a wasteful number, since it uses less digits than its factorization.

50640404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12660105 (or 12660103 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 50640404 is about 7116.2071358273. The cubic root of 50640404 is about 369.9693278689.

The spelling of 50640404 in words is "fifty million, six hundred forty thousand, four hundred four".