50977059961 has 3 divisors (see below), whose sum is σ = 50977285743. Its totient is φ = 50976834180.

The previous prime is 50977059929. The next prime is 50977059977. The reversal of 50977059961 is 16995077905.

The square root of 50977059961 is 225781.

It is a perfect power (a square), and thus also a powerful number.

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.

It can be written as a sum of positive squares in only one way, i.e., 6396960361 + 44580099600 = 79981^2 + 211140^2 .

It is not a de Polignac number, because 50977059961 - 2⁵ = 50977059929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50977059896 and 50977059905.

It is not an unprimeable number, because it can be changed into a prime (50977059361) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 112891 + ... + 338671.

It is an arithmetic number, because the mean of its divisors is an integer number (16992428581).

Almost surely, 2^50977059961 is an apocalyptic number.

50977059961 is the 225781-st square number.

50977059961 is the 112891-st centered octagonal number.

It is an amenable number.

50977059961 is a deficient number, since it is larger than the sum of its proper divisors (225782).

50977059961 is an frugal number, since it uses more digits than its factorization.

50977059961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451562 (or 225781 counting only the distinct ones).

The product of its (nonzero) digits is 5358150, while the sum is 58.

The spelling of 50977059961 in words is "fifty billion, nine hundred seventy-seven million, fifty-nine thousand, nine hundred sixty-one".