55571232715547 has 8 divisors (see below), whose sum is σ = 58865284904400. Its totient is φ = 52279975654144.

The previous prime is 55571232715501. The next prime is 55571232715567. The reversal of 55571232715547 is 74551723217555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55571232715547 - 2¹⁸ = 55571232453403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55571232715567) 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, 698740922 + ... + 698820447.

It is an arithmetic number, because the mean of its divisors is an integer number (7358160613050).

Almost surely, 2^{55571232715547} is an apocalyptic number.

55571232715547 is a deficient number, since it is larger than the sum of its proper divisors (3294052188853).

55571232715547 is a wasteful number, since it uses less digits than its factorization.

55571232715547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397563725.

The product of its digits is 51450000, while the sum is 59.

The spelling of 55571232715547 in words is "fifty-five trillion, five hundred seventy-one billion, two hundred thirty-two million, seven hundred fifteen thousand, five hundred forty-seven".