53555501720 has 64 divisors (see below), whose sum is σ = 140644270080. Its totient is φ = 17971203456.

The previous prime is 53555501719. The next prime is 53555501807. The reversal of 53555501720 is 2710555535.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2021624 + ... + 2047943.

It is an arithmetic number, because the mean of its divisors is an integer number (2197566720).

Almost surely, 2^53555501720 is an apocalyptic number.

It is an amenable number.

53555501720 is an abundant number, since it is smaller than the sum of its proper divisors (87088768360).

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

53555501720 is a wasteful number, since it uses less digits than its factorization.

53555501720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069632 (or 4069628 counting only the distinct ones).

The product of its (nonzero) digits is 131250, while the sum is 38.

The spelling of 53555501720 in words is "fifty-three billion, five hundred fifty-five million, five hundred one thousand, seven hundred twenty".