53903664 has 40 divisors (see below), whose sum is σ = 154724720. Its totient is φ = 17967744.

The previous prime is 53903659. The next prime is 53903669. The reversal of 53903664 is 46630935.

It is an interprime number because it is at equal distance from previous prime (53903659) and next prime (53903669).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (53903669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61957 + ... + 62820.

It is an arithmetic number, because the mean of its divisors is an integer number (3868118).

Almost surely, 2^53903664 is an apocalyptic number.

53903664 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

53903664 is an abundant number, since it is smaller than the sum of its proper divisors (100821056).

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

53903664 is a wasteful number, since it uses less digits than its factorization.

53903664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124794 (or 124782 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 53903664 is about 7341.9114677310. The cubic root of 53903664 is about 377.7514112574.

The spelling of 53903664 in words is "fifty-three million, nine hundred three thousand, six hundred sixty-four".