53806917 has 32 divisors (see below), whose sum is σ = 80158720. Its totient is φ = 31959360.

The previous prime is 53806903. The next prime is 53806927. The reversal of 53806917 is 71960835.

It is not a de Polignac number, because 53806917 - 2⁸ = 53806661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53806927) 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, 64968 + ... + 65790.

It is an arithmetic number, because the mean of its divisors is an integer number (2504960).

Almost surely, 2^53806917 is an apocalyptic number.

53806917 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

53806917 is a deficient number, since it is larger than the sum of its proper divisors (26351803).

53806917 is a wasteful number, since it uses less digits than its factorization.

53806917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913.

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

The square root of 53806917 is about 7335.3198294280. The cubic root of 53806917 is about 377.5252781927.

The spelling of 53806917 in words is "fifty-three million, eight hundred six thousand, nine hundred seventeen".