53256404 has 12 divisors (see below), whose sum is σ = 93465204. Its totient is φ = 26552064.

The previous prime is 53256323. The next prime is 53256433. The reversal of 53256404 is 40465235.

It can be written as a sum of positive squares in 2 ways, for example, as 41628304 + 11628100 = 6452^2 + 3410^2 .

It is a super-2 number, since 2×53256404² = 5672489134022432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17447 + ... + 20270.

It is an arithmetic number, because the mean of its divisors is an integer number (7788767).

Almost surely, 2^53256404 is an apocalyptic number.

It is an amenable number.

53256404 is a deficient number, since it is larger than the sum of its proper divisors (40208800).

53256404 is a wasteful number, since it uses less digits than its factorization.

53256404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38074 (or 38072 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 53256404 is about 7297.6985413211. The cubic root of 53256404 is about 376.2333412785.

The spelling of 53256404 in words is "fifty-three million, two hundred fifty-six thousand, four hundred four".