45444522257 has 2 divisors, whose sum is σ = 45444522258. Its totient is φ = 45444522256.

The previous prime is 45444522209. The next prime is 45444522269. The reversal of 45444522257 is 75222544454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28696021201 + 16748501056 = 169399^2 + 129416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45444522257 is a prime.

It is not a weakly prime, because it can be changed into another prime (45444522457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22722261128 + 22722261129.

It is an arithmetic number, because the mean of its divisors is an integer number (22722261129).

Almost surely, 2^45444522257 is an apocalyptic number.

It is an amenable number.

45444522257 is a deficient number, since it is larger than the sum of its proper divisors (1).

45444522257 is an equidigital number, since it uses as much as digits as its factorization.

45444522257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1792000, while the sum is 44.

The spelling of 45444522257 in words is "forty-five billion, four hundred forty-four million, five hundred twenty-two thousand, two hundred fifty-seven".