55074223521 has 24 divisors (see below), whose sum is σ = 79700362560. Its totient is φ = 36647593056.

The previous prime is 55074223439. The next prime is 55074223541. The reversal of 55074223521 is 12532247055.

55074223521 is a `hidden beast` number, since 550 + 74 + 2 + 2 + 35 + 2 + 1 = 666.

It is not a de Polignac number, because 55074223521 - 2²³ = 55065834913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55074223541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13742500 + ... + 13746506.

It is an arithmetic number, because the mean of its divisors is an integer number (3320848440).

Almost surely, 2^55074223521 is an apocalyptic number.

It is an amenable number.

55074223521 is a deficient number, since it is larger than the sum of its proper divisors (24626139039).

55074223521 is a wasteful number, since it uses less digits than its factorization.

55074223521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6485 (or 6482 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The spelling of 55074223521 in words is "fifty-five billion, seventy-four million, two hundred twenty-three thousand, five hundred twenty-one".