50578920 has 96 divisors (see below), whose sum is σ = 187873920. Its totient is φ = 11560320.

The previous prime is 50578883. The next prime is 50578921. The reversal of 50578920 is 2987505.

Added to its reverse (2987505) it gives a triangular number (53566425 = T₁₀₃₅₀).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (50578921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7516 + ... + 12555.

It is an arithmetic number, because the mean of its divisors is an integer number (1957020).

Almost surely, 2^50578920 is an apocalyptic number.

It is an amenable number.

50578920 is an abundant number, since it is smaller than the sum of its proper divisors (137295000).

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

50578920 is a wasteful number, since it uses less digits than its factorization.

50578920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20095 (or 20088 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 50578920 is about 7111.8858258552. The cubic root of 50578920 is about 369.8195370261.

Adding to 50578920 its reverse (2987505), we get a triangular number (53566425 = T₁₀₃₅₀).

The spelling of 50578920 in words is "fifty million, five hundred seventy-eight thousand, nine hundred twenty".