53431604 has 12 divisors (see below), whose sum is σ = 93806244. Its totient is φ = 26629824.

The previous prime is 53431603. The next prime is 53431619. The reversal of 53431604 is 40613435.

It can be written as a sum of positive squares in 2 ways, for example, as 11155600 + 42276004 = 3340^2 + 6502^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53431603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20087 + ... + 22590.

It is an arithmetic number, because the mean of its divisors is an integer number (7817187).

Almost surely, 2^53431604 is an apocalyptic number.

It is an amenable number.

53431604 is a deficient number, since it is larger than the sum of its proper divisors (40374640).

53431604 is a wasteful number, since it uses less digits than its factorization.

53431604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42994 (or 42992 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 53431604 is about 7309.6924695913. The cubic root of 53431604 is about 376.6454602970.

The spelling of 53431604 in words is "fifty-three million, four hundred thirty-one thousand, six hundred four".