50161731 has 16 divisors (see below), whose sum is σ = 68198400. Its totient is φ = 32788800.

The previous prime is 50161723. The next prime is 50161739. The reversal of 50161731 is 13716105.

It is an interprime number because it is at equal distance from previous prime (50161723) and next prime (50161739).

It is not a de Polignac number, because 50161731 - 2³ = 50161723 is a prime.

It is a super-2 number, since 2×50161731² = 5032398513832722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50161739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43006 + ... + 44156.

It is an arithmetic number, because the mean of its divisors is an integer number (4262400).

Almost surely, 2^50161731 is an apocalyptic number.

50161731 is a deficient number, since it is larger than the sum of its proper divisors (18036669).

50161731 is a wasteful number, since it uses less digits than its factorization.

50161731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 50161731 is about 7082.4946876083. The cubic root of 50161731 is about 368.7999370846.

Adding to 50161731 its reverse (13716105), we get a palindrome (63877836).

The spelling of 50161731 in words is "fifty million, one hundred sixty-one thousand, seven hundred thirty-one".