50972777 has 4 divisors (see below), whose sum is σ = 50987076. Its totient is φ = 50958480.

The previous prime is 50972737. The next prime is 50972797. The reversal of 50972777 is 77727905.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 77727905 = 5 ⋅15545581.

It can be written as a sum of positive squares in 2 ways, for example, as 36917776 + 14055001 = 6076^2 + 3749^2 .

It is a cyclic number.

It is not a de Polignac number, because 50972777 - 2⁸ = 50972521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50972737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3023 + ... + 10539.

It is an arithmetic number, because the mean of its divisors is an integer number (12746769).

Almost surely, 2^50972777 is an apocalyptic number.

It is an amenable number.

50972777 is a deficient number, since it is larger than the sum of its proper divisors (14299).

50972777 is an equidigital number, since it uses as much as digits as its factorization.

50972777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14298.

The product of its (nonzero) digits is 216090, while the sum is 44.

The square root of 50972777 is about 7139.5221828915. The cubic root of 50972777 is about 370.7769817949.

The spelling of 50972777 in words is "fifty million, nine hundred seventy-two thousand, seven hundred seventy-seven".