45250277981 has 2 divisors, whose sum is σ = 45250277982. Its totient is φ = 45250277980.

The previous prime is 45250277959. The next prime is 45250277983. The reversal of 45250277981 is 18977205254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26653501081 + 18596776900 = 163259^2 + 136370^2 .

It is a cyclic number.

It is not a de Polignac number, because 45250277981 - 2²⁶ = 45183169117 is a prime.

It is a super-2 number, since 2×45250277981² (a number of 22 digits) contains 22 as substring.

Together with 45250277983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45250277983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22625138990 + 22625138991.

It is an arithmetic number, because the mean of its divisors is an integer number (22625138991).

Almost surely, 2^45250277981 is an apocalyptic number.

It is an amenable number.

45250277981 is a deficient number, since it is larger than the sum of its proper divisors (1).

45250277981 is an equidigital number, since it uses as much as digits as its factorization.

45250277981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1411200, while the sum is 50.

The spelling of 45250277981 in words is "forty-five billion, two hundred fifty million, two hundred seventy-seven thousand, nine hundred eighty-one".