50557558590 has 640 divisors, whose sum is σ = 176135731200. Its totient is φ = 10313049600.

The previous prime is 50557558559. The next prime is 50557558627. The reversal of 50557558590 is 9585575505.

50557558590 is a `hidden beast` number, since 5 + 0 + 5 + 57 + 5 + 585 + 9 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 216985114 + ... + 216985346.

It is an arithmetic number, because the mean of its divisors is an integer number (275212080).

Almost surely, 2^50557558590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50557558590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88067865600).

50557558590 is an abundant number, since it is smaller than the sum of its proper divisors (125578172610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50557558590 is a wasteful number, since it uses less digits than its factorization.

50557558590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 7875000, while the sum is 54.

The spelling of 50557558590 in words is "fifty billion, five hundred fifty-seven million, five hundred fifty-eight thousand, five hundred ninety".