50772731 has 4 divisors (see below), whose sum is σ = 53445000. Its totient is φ = 48100464.

The previous prime is 50772721. The next prime is 50772791. The reversal of 50772731 is 13727705.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13727705 = 5 ⋅2745541.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50772731 is a prime.

It is a super-2 number, since 2×50772731² = 5155740426396722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50772721) 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, 1336106 + ... + 1336143.

It is an arithmetic number, because the mean of its divisors is an integer number (13361250).

Almost surely, 2^50772731 is an apocalyptic number.

50772731 is a deficient number, since it is larger than the sum of its proper divisors (2672269).

50772731 is a wasteful number, since it uses less digits than its factorization.

50772731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672268.

The product of its (nonzero) digits is 10290, while the sum is 32.

The square root of 50772731 is about 7125.4986492175. The cubic root of 50772731 is about 370.2912996973.

The spelling of 50772731 in words is "fifty million, seven hundred seventy-two thousand, seven hundred thirty-one".