50515020 has 36 divisors (see below), whose sum is σ = 153229440. Its totient is φ = 13470624.

The previous prime is 50514983. The next prime is 50515037. The reversal of 50515020 is 2051505.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 50514984 and 50515002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140140 + ... + 140499.

Almost surely, 2^50515020 is an apocalyptic number.

It is an amenable number.

50515020 is an abundant number, since it is smaller than the sum of its proper divisors (102714420).

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

50515020 is a wasteful number, since it uses less digits than its factorization.

50515020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280654 (or 280649 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 50515020 is about 7107.3919267197. The cubic root of 50515020 is about 369.6637314904.

Adding to 50515020 its reverse (2051505), we get a palindrome (52566525).

The spelling of 50515020 in words is "fifty million, five hundred fifteen thousand, twenty".