53581806 has 12 divisors (see below), whose sum is σ = 116093952. Its totient is φ = 17860596.

The previous prime is 53581799. The next prime is 53581811. The reversal of 53581806 is 60818535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1488366 + ... + 1488401.

It is an arithmetic number, because the mean of its divisors is an integer number (9674496).

Almost surely, 2^53581806 is an apocalyptic number.

53581806 is an abundant number, since it is smaller than the sum of its proper divisors (62512146).

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

53581806 is a wasteful number, since it uses less digits than its factorization.

53581806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976775 (or 2976772 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 53581806 is about 7319.9594261171. The cubic root of 53581806 is about 376.9980604375.

The spelling of 53581806 in words is "fifty-three million, five hundred eighty-one thousand, eight hundred six".