50778631 has 8 divisors (see below), whose sum is σ = 51524000. Its totient is φ = 50038560.

The previous prime is 50778551. The next prime is 50778649. The reversal of 50778631 is 13687705.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50778631 is a prime.

It is a super-2 number, since 2×50778631² = 5156938732468322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50778671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20521 + ... + 22861.

It is an arithmetic number, because the mean of its divisors is an integer number (6440500).

Almost surely, 2^50778631 is an apocalyptic number.

50778631 is a deficient number, since it is larger than the sum of its proper divisors (745369).

50778631 is a wasteful number, since it uses less digits than its factorization.

50778631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2649.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 50778631 is about 7125.9126433040. The cubic root of 50778631 is about 370.3056422653.

The spelling of 50778631 in words is "fifty million, seven hundred seventy-eight thousand, six hundred thirty-one".