50157978 has 16 divisors (see below), whose sum is σ = 108032736. Its totient is φ = 15433200.

The previous prime is 50157971. The next prime is 50158027. The reversal of 50157978 is 87975105.

It is not an unprimeable number, because it can be changed into a prime (50157971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321448 + ... + 321603.

It is an arithmetic number, because the mean of its divisors is an integer number (6752046).

Almost surely, 2^50157978 is an apocalyptic number.

50157978 is an abundant number, since it is smaller than the sum of its proper divisors (57874758).

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

50157978 is a wasteful number, since it uses less digits than its factorization.

50157978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643069.

The product of its (nonzero) digits is 88200, while the sum is 42.

The square root of 50157978 is about 7082.2297336362. The cubic root of 50157978 is about 368.7907392316.

The spelling of 50157978 in words is "fifty million, one hundred fifty-seven thousand, nine hundred seventy-eight".