50557551 has 48 divisors (see below), whose sum is σ = 78650880. Its totient is φ = 28828800.

The previous prime is 50557531. The next prime is 50557561. The reversal of 50557551 is 15575505.

It is not a de Polignac number, because 50557551 - 2⁶ = 50557487 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50557501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 639930 + ... + 640008.

It is an arithmetic number, because the mean of its divisors is an integer number (1638560).

Almost surely, 2^50557551 is an apocalyptic number.

50557551 is a deficient number, since it is larger than the sum of its proper divisors (28093329).

50557551 is a wasteful number, since it uses less digits than its factorization.

50557551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 21875, while the sum is 33.

The square root of 50557551 is about 7110.3833230002. The cubic root of 50557551 is about 369.7674482187.

The spelling of 50557551 in words is "fifty million, five hundred fifty-seven thousand, five hundred fifty-one".