50155731 has 12 divisors (see below), whose sum is σ = 73529352. Its totient is φ = 32937696.

The previous prime is 50155697. The next prime is 50155741. The reversal of 50155731 is 13755105.

It is not a de Polignac number, because 50155731 - 2⁶ = 50155667 is a prime.

It is a super-2 number, since 2×50155731² = 5031194704288722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 50155695 and 50155704.

It is not an unprimeable number, because it can be changed into a prime (50155741) 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, 40986 + ... + 42191.

It is an arithmetic number, because the mean of its divisors is an integer number (6127446).

Almost surely, 2^50155731 is an apocalyptic number.

50155731 is a deficient number, since it is larger than the sum of its proper divisors (23373621).

50155731 is a wasteful number, since it uses less digits than its factorization.

50155731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83250 (or 83247 counting only the distinct ones).

The product of its (nonzero) digits is 2625, while the sum is 27.

The square root of 50155731 is about 7082.0710953788. The cubic root of 50155731 is about 368.7852320641.

The spelling of 50155731 in words is "fifty million, one hundred fifty-five thousand, seven hundred thirty-one".