53903556 has 60 divisors (see below), whose sum is σ = 161051968. Its totient is φ = 15400368.

The previous prime is 53903543. The next prime is 53903557. The reversal of 53903556 is 65530935.

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

It is a self number, because there is not a number n which added to its sum of digits gives 53903556.

It is not an unprimeable number, because it can be changed into a prime (53903557) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9616 + ... + 14151.

Almost surely, 2^53903556 is an apocalyptic number.

It is an amenable number.

53903556 is an abundant number, since it is smaller than the sum of its proper divisors (107148412).

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

53903556 is a wasteful number, since it uses less digits than its factorization.

53903556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23790 (or 23779 counting only the distinct ones).

The product of its (nonzero) digits is 60750, while the sum is 36.

The square root of 53903556 is about 7341.9041126945. The cubic root of 53903556 is about 377.7511589728.

The spelling of 53903556 in words is "fifty-three million, nine hundred three thousand, five hundred fifty-six".