50981731 has 8 divisors (see below), whose sum is σ = 55998720. Its totient is φ = 46198152.

The previous prime is 50981729. The next prime is 50981747. The reversal of 50981731 is 13718905.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 50981731 - 2¹ = 50981729 is a prime.

It is a super-2 number, since 2×50981731² = 5198273791512722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50981131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57895 + ... + 58768.

It is an arithmetic number, because the mean of its divisors is an integer number (6999840).

Almost surely, 2^50981731 is an apocalyptic number.

50981731 is a deficient number, since it is larger than the sum of its proper divisors (5016989).

50981731 is a wasteful number, since it uses less digits than its factorization.

50981731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116705.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 50981731 is about 7140.1492281324. The cubic root of 50981731 is about 370.7986910477.

The spelling of 50981731 in words is "fifty million, nine hundred eighty-one thousand, seven hundred thirty-one".