55457085480 has 128 divisors (see below), whose sum is σ = 169186320000. Its totient is φ = 14540201984.

The previous prime is 55457085457. The next prime is 55457085493. The reversal of 55457085480 is 8458075455.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1897216 + ... + 1926224.

It is an arithmetic number, because the mean of its divisors is an integer number (1321768125).

Almost surely, 2^55457085480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55457085480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84593160000).

55457085480 is an abundant number, since it is smaller than the sum of its proper divisors (113729234520).

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

55457085480 is a wasteful number, since it uses less digits than its factorization.

55457085480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29291 (or 29287 counting only the distinct ones).

The product of its (nonzero) digits is 4480000, while the sum is 51.

The spelling of 55457085480 in words is "fifty-five billion, four hundred fifty-seven million, eighty-five thousand, four hundred eighty".