45252497281 has 2 divisors, whose sum is σ = 45252497282. Its totient is φ = 45252497280.

The previous prime is 45252497267. The next prime is 45252497299. The reversal of 45252497281 is 18279425254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25254295056 + 19998202225 = 158916^2 + 141415^2 .

It is a cyclic number.

It is not a de Polignac number, because 45252497281 - 2⁵ = 45252497249 is a prime.

It is a super-2 number, since 2×45252497281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45252497881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22626248640 + 22626248641.

It is an arithmetic number, because the mean of its divisors is an integer number (22626248641).

Almost surely, 2^45252497281 is an apocalyptic number.

It is an amenable number.

45252497281 is a deficient number, since it is larger than the sum of its proper divisors (1).

45252497281 is an equidigital number, since it uses as much as digits as its factorization.

45252497281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1612800, while the sum is 49.

The spelling of 45252497281 in words is "forty-five billion, two hundred fifty-two million, four hundred ninety-seven thousand, two hundred eighty-one".