55987169571 has 32 divisors (see below), whose sum is σ = 84194739200. Its totient is φ = 36764189280.

The previous prime is 55987169551. The next prime is 55987169591. The reversal of 55987169571 is 17596178955.

55987169571 is a `hidden beast` number, since 5 + 59 + 8 + 7 + 1 + 6 + 9 + 571 = 666.

It is an interprime number because it is at equal distance from previous prime (55987169551) and next prime (55987169591).

It is not a de Polignac number, because 55987169571 - 2²⁵ = 55953615139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55987169499 and 55987169508.

It is not an unprimeable number, because it can be changed into a prime (55987169551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 866820 + ... + 929166.

It is an arithmetic number, because the mean of its divisors is an integer number (2631085600).

Almost surely, 2^55987169571 is an apocalyptic number.

55987169571 is a deficient number, since it is larger than the sum of its proper divisors (28207569629).

55987169571 is a wasteful number, since it uses less digits than its factorization.

55987169571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62856 (or 62850 counting only the distinct ones).

The product of its digits is 23814000, while the sum is 63.

The spelling of 55987169571 in words is "fifty-five billion, nine hundred eighty-seven million, one hundred sixty-nine thousand, five hundred seventy-one".