50402831 has 4 divisors (see below), whose sum is σ = 50536200. Its totient is φ = 50269464.

The previous prime is 50402819. The next prime is 50402851. The reversal of 50402831 is 13820405.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50402831 is a prime.

It is a super-2 number, since 2×50402831² = 5080890745629122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50402797 and 50402806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50402851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66116 + ... + 66873.

It is an arithmetic number, because the mean of its divisors is an integer number (12634050).

Almost surely, 2^50402831 is an apocalyptic number.

50402831 is a deficient number, since it is larger than the sum of its proper divisors (133369).

50402831 is a wasteful number, since it uses less digits than its factorization.

50402831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133368.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 50402831 is about 7099.4951228943. The cubic root of 50402831 is about 369.3898661184.

The spelling of 50402831 in words is "fifty million, four hundred two thousand, eight hundred thirty-one".