55140545532 has 24 divisors (see below), whose sum is σ = 128674904400. Its totient is φ = 18378234496.

The previous prime is 55140545519. The next prime is 55140545533. The reversal of 55140545532 is 23554504155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55140545533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123057 + ... + 354152.

It is an arithmetic number, because the mean of its divisors is an integer number (5361454350).

Almost surely, 2^55140545532 is an apocalyptic number.

It is an amenable number.

55140545532 is an abundant number, since it is smaller than the sum of its proper divisors (73534358868).

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

55140545532 is a wasteful number, since it uses less digits than its factorization.

55140545532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486845 (or 486843 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 39.

The spelling of 55140545532 in words is "fifty-five billion, one hundred forty million, five hundred forty-five thousand, five hundred thirty-two".