50149731 has 4 divisors (see below), whose sum is σ = 66866312. Its totient is φ = 33433152.

The previous prime is 50149727. The next prime is 50149741. The reversal of 50149731 is 13794105.

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

It is not a de Polignac number, because 50149731 - 2² = 50149727 is a prime.

It is a super-2 number, since 2×50149731² = 5029991038744722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50149741) 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, 8358286 + ... + 8358291.

It is an arithmetic number, because the mean of its divisors is an integer number (16716578).

Almost surely, 2^50149731 is an apocalyptic number.

50149731 is a deficient number, since it is larger than the sum of its proper divisors (16716581).

50149731 is a wasteful number, since it uses less digits than its factorization.

50149731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16716580.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 50149731 is about 7081.6474778119. The cubic root of 50149731 is about 368.7705258707.

The spelling of 50149731 in words is "fifty million, one hundred forty-nine thousand, seven hundred thirty-one".