53971806 has 32 divisors (see below), whose sum is σ = 127346688. Its totient is φ = 14922720.

The previous prime is 53971781. The next prime is 53971811. The reversal of 53971806 is 60817935.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19425 + ... + 22028.

It is an arithmetic number, because the mean of its divisors is an integer number (3979584).

Almost surely, 2^53971806 is an apocalyptic number.

53971806 is an abundant number, since it is smaller than the sum of its proper divisors (73374882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53971806 is a wasteful number, since it uses less digits than its factorization.

53971806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41496.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 53971806 is about 7346.5506191682. The cubic root of 53971806 is about 377.9105216387.

The spelling of 53971806 in words is "fifty-three million, nine hundred seventy-one thousand, eight hundred six".