53555808 has 48 divisors (see below), whose sum is σ = 145439280. Its totient is φ = 17235456.

The previous prime is 53555791. The next prime is 53555819. The reversal of 53555808 is 80855535.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6835 + ... + 12402.

It is an arithmetic number, because the mean of its divisors is an integer number (3029985).

Almost surely, 2^53555808 is an apocalyptic number.

53555808 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

53555808 is an abundant number, since it is smaller than the sum of its proper divisors (91883472).

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

53555808 is a wasteful number, since it uses less digits than its factorization.

53555808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19279 (or 19271 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 39.

The square root of 53555808 is about 7318.1833811404. The cubic root of 53555808 is about 376.9370771677.

The spelling of 53555808 in words is "fifty-three million, five hundred fifty-five thousand, eight hundred eight".