50557891 has 8 divisors (see below), whose sum is σ = 51093504. Its totient is φ = 50025480.

The previous prime is 50557877. The next prime is 50557901. The reversal of 50557891 is 19875505.

50557891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 50557891 - 2²¹ = 48460739 is a prime.

It is a super-2 number, since 2×50557891² = 5112200684735762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50557861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42000 + ... + 43186.

It is an arithmetic number, because the mean of its divisors is an integer number (6386688).

Almost surely, 2^50557891 is an apocalyptic number.

50557891 is a deficient number, since it is larger than the sum of its proper divisors (535613).

50557891 is a wasteful number, since it uses less digits than its factorization.

50557891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601.

The product of its (nonzero) digits is 63000, while the sum is 40.

The square root of 50557891 is about 7110.4072316570. The cubic root of 50557891 is about 369.7682771133.

The spelling of 50557891 in words is "fifty million, five hundred fifty-seven thousand, eight hundred ninety-one".