50557820 has 24 divisors (see below), whose sum is σ = 106880928. Its totient is φ = 20088000.

The previous prime is 50557789. The next prime is 50557861. The reversal of 50557820 is 2875505.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5351 + ... + 11390.

It is an arithmetic number, because the mean of its divisors is an integer number (4453372).

Almost surely, 2^50557820 is an apocalyptic number.

It is an amenable number.

50557820 is an abundant number, since it is smaller than the sum of its proper divisors (56323108).

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

50557820 is a wasteful number, since it uses less digits than its factorization.

50557820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16901 (or 16899 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 50557820 is about 7110.4022389735. The cubic root of 50557820 is about 369.7681040209.

The spelling of 50557820 in words is "fifty million, five hundred fifty-seven thousand, eight hundred twenty".