50017720 has 16 divisors (see below), whose sum is σ = 112539960. Its totient is φ = 20007072.

The previous prime is 50017717. The next prime is 50017753. The reversal of 50017720 is 2771005.

It is a junction number, because it is equal to n+sod(n) for n = 50017691 and 50017700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625182 + ... + 625261.

Almost surely, 2^50017720 is an apocalyptic number.

It is an amenable number.

50017720 is an abundant number, since it is smaller than the sum of its proper divisors (62522240).

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

50017720 is a wasteful number, since it uses less digits than its factorization.

50017720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250454 (or 1250450 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 50017720 is about 7072.3206940862. The cubic root of 50017720 is about 368.4466654159.

Adding to 50017720 its reverse (2771005), we get a palindrome (52788725).

It can be divided in two parts, 5001 and 7720, that added together give a palindrome (12721).

The spelling of 50017720 in words is "fifty million, seventeen thousand, seven hundred twenty".