50781731 has 32 divisors (see below), whose sum is σ = 69017088. Its totient is φ = 36080640.

The previous prime is 50781727. The next prime is 50781749. The reversal of 50781731 is 13718705.

50781731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 50781731 - 2² = 50781727 is a prime.

It is a super-2 number, since 2×50781731² = 5157568406712722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50781701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96836 + ... + 97358.

It is an arithmetic number, because the mean of its divisors is an integer number (2156784).

Almost surely, 2^50781731 is an apocalyptic number.

50781731 is a deficient number, since it is larger than the sum of its proper divisors (18235357).

50781731 is a wasteful number, since it uses less digits than its factorization.

50781731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 50781731 is about 7126.1301559823. The cubic root of 50781731 is about 370.3131777457.

The spelling of 50781731 in words is "fifty million, seven hundred eighty-one thousand, seven hundred thirty-one".