55257558000 has 80 divisors (see below), whose sum is σ = 178150386336. Its totient is φ = 14735347200.

The previous prime is 55257557989. The next prime is 55257558017. The reversal of 55257558000 is 85575255.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×55257558000² (a number of 22 digits) contains 22 as substring.

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, 4598797 + ... + 4610796.

Almost surely, 2^55257558000 is an apocalyptic number.

55257558000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55257558000 is an abundant number, since it is smaller than the sum of its proper divisors (122892828336).

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

55257558000 is a wasteful number, since it uses less digits than its factorization.

55257558000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9209619 (or 9209603 counting only the distinct ones).

The product of its (nonzero) digits is 350000, while the sum is 42.

The spelling of 55257558000 in words is "fifty-five billion, two hundred fifty-seven million, five hundred fifty-eight thousand".