53372709 has 32 divisors (see below), whose sum is σ = 86360960. Its totient is φ = 32379264.

The previous prime is 53372701. The next prime is 53372713. The reversal of 53372709 is 90727335.

It is a happy number.

It is not a de Polignac number, because 53372709 - 2³ = 53372701 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53372701) 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, 24582 + ... + 26664.

It is an arithmetic number, because the mean of its divisors is an integer number (2698780).

Almost surely, 2^53372709 is an apocalyptic number.

It is an amenable number.

53372709 is a deficient number, since it is larger than the sum of its proper divisors (32988251).

53372709 is a wasteful number, since it uses less digits than its factorization.

53372709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178 (or 2172 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 36.

The square root of 53372709 is about 7305.6628036065. The cubic root of 53372709 is about 376.5070235670.

The spelling of 53372709 in words is "fifty-three million, three hundred seventy-two thousand, seven hundred nine".