55500050557 has 12 divisors (see below), whose sum is σ = 65655545760. Its totient is φ = 46765173336.

The previous prime is 55500050549. The next prime is 55500050561. The reversal of 55500050557 is 75505000555.

It is not a de Polignac number, because 55500050557 - 2³ = 55500050549 is a prime.

It is a super-2 number, since 2×55500050557² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55500050587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9595873 + ... + 9601654.

It is an arithmetic number, because the mean of its divisors is an integer number (5471295480).

Almost surely, 2^55500050557 is an apocalyptic number.

It is an amenable number.

55500050557 is a deficient number, since it is larger than the sum of its proper divisors (10155495203).

55500050557 is a wasteful number, since it uses less digits than its factorization.

55500050557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19197600 (or 19197593 counting only the distinct ones).

The product of its (nonzero) digits is 109375, while the sum is 37.

The spelling of 55500050557 in words is "fifty-five billion, five hundred million, fifty thousand, five hundred fifty-seven".