55071505170531 has 24 divisors (see below), whose sum is σ = 82506556186704. Its totient is φ = 35368373649600.

The previous prime is 55071505170523. The next prime is 55071505170547. The reversal of 55071505170531 is 13507150517055.

55071505170531 is a `hidden beast` number, since 5 + 5 + 0 + 71 + 505 + 1 + 70 + 5 + 3 + 1 = 666.

It is not a de Polignac number, because 55071505170531 - 2³ = 55071505170523 is a prime.

It is a super-2 number, since 2×55071505170531² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55071505170551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 818678721 + ... + 818745986.

It is an arithmetic number, because the mean of its divisors is an integer number (3437773174446).

Almost surely, 2^{55071505170531} is an apocalyptic number.

55071505170531 is a deficient number, since it is larger than the sum of its proper divisors (27435051016173).

55071505170531 is a wasteful number, since it uses less digits than its factorization.

55071505170531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637424851 (or 1637424848 counting only the distinct ones).

The product of its (nonzero) digits is 459375, while the sum is 45.

Adding to 55071505170531 its reverse (13507150517055), we get a palindrome (68578655687586).

The spelling of 55071505170531 in words is "fifty-five trillion, seventy-one billion, five hundred five million, one hundred seventy thousand, five hundred thirty-one".