2251376977 has 2 divisors, whose sum is σ = 2251376978. Its totient is φ = 2251376976.

The previous prime is 2251376971. The next prime is 2251376989. The reversal of 2251376977 is 7796731522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2067611841 + 183765136 = 45471^2 + 13556^2 .

It is a cyclic number.

It is not a de Polignac number, because 2251376977 - 2³ = 2251376969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2251376977.

It is not a weakly prime, because it can be changed into another prime (2251376971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125688488 + 1125688489.

It is an arithmetic number, because the mean of its divisors is an integer number (1125688489).

Almost surely, 2^2251376977 is an apocalyptic number.

It is an amenable number.

2251376977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251376977 is an equidigital number, since it uses as much as digits as its factorization.

2251376977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1111320, while the sum is 49.

The square root of 2251376977 is about 47448.6772945253. The cubic root of 2251376977 is about 1310.6379537497.

The spelling of 2251376977 in words is "two billion, two hundred fifty-one million, three hundred seventy-six thousand, nine hundred seventy-seven".