2250978977 has 4 divisors (see below), whose sum is σ = 2424131220. Its totient is φ = 2077826736.

The previous prime is 2250978941. The next prime is 2250978979. The reversal of 2250978977 is 7798790522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 638876176 + 1612102801 = 25276^2 + 40151^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2250978977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2250978979) 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, 86576102 + ... + 86576127.

It is an arithmetic number, because the mean of its divisors is an integer number (606032805).

Almost surely, 2^2250978977 is an apocalyptic number.

It is an amenable number.

2250978977 is a deficient number, since it is larger than the sum of its proper divisors (173152243).

2250978977 is a wasteful number, since it uses less digits than its factorization.

2250978977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173152242.

The product of its (nonzero) digits is 4445280, while the sum is 56.

The square root of 2250978977 is about 47444.4831039395. The cubic root of 2250978977 is about 1310.5607173661.

The spelling of 2250978977 in words is "two billion, two hundred fifty million, nine hundred seventy-eight thousand, nine hundred seventy-seven".