50978631 has 32 divisors (see below), whose sum is σ = 79266816. Its totient is φ = 29040000.

The previous prime is 50978617. The next prime is 50978647. The reversal of 50978631 is 13687905.

It is not a de Polignac number, because 50978631 - 2⁶ = 50978567 is a prime.

It is a super-2 number, since 2×50978631² = 5197641637268322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50978631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50978611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67506 + ... + 68256.

It is an arithmetic number, because the mean of its divisors is an integer number (2477088).

Almost surely, 2^50978631 is an apocalyptic number.

50978631 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

50978631 is a deficient number, since it is larger than the sum of its proper divisors (28288185).

50978631 is a wasteful number, since it uses less digits than its factorization.

50978631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804 (or 782 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 50978631 is about 7139.9321425347. The cubic root of 50978631 is about 370.7911752885.

The spelling of 50978631 in words is "fifty million, nine hundred seventy-eight thousand, six hundred thirty-one".