50720031 has 12 divisors (see below), whose sum is σ = 73396752. Its totient is φ = 33751296.

The previous prime is 50720029. The next prime is 50720041. The reversal of 50720031 is 13002705.

It is not a de Polignac number, because 50720031 - 2¹ = 50720029 is a prime.

It is a super-2 number, since 2×50720031² = 5145043089281922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 50719986 and 50720013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50720011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 310 + ... + 10076.

It is an arithmetic number, because the mean of its divisors is an integer number (6116396).

Almost surely, 2^50720031 is an apocalyptic number.

50720031 is a deficient number, since it is larger than the sum of its proper divisors (22676721).

50720031 is a wasteful number, since it uses less digits than its factorization.

50720031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10350 (or 10347 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 50720031 is about 7121.7997023224. The cubic root of 50720031 is about 370.1631396482.

Adding to 50720031 its reverse (13002705), we get a palindrome (63722736).

The spelling of 50720031 in words is "fifty million, seven hundred twenty thousand, thirty-one".