45251257 has 2 divisors, whose sum is σ = 45251258. Its totient is φ = 45251256.

The previous prime is 45251231. The next prime is 45251273. The reversal of 45251257 is 75215254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26101881 + 19149376 = 5109^2 + 4376^2 .

It is a cyclic number.

It is not a de Polignac number, because 45251257 - 2¹¹ = 45249209 is a prime.

It is not a weakly prime, because it can be changed into another prime (45252257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22625628 + 22625629.

It is an arithmetic number, because the mean of its divisors is an integer number (22625629).

Almost surely, 2^45251257 is an apocalyptic number.

It is an amenable number.

45251257 is a deficient number, since it is larger than the sum of its proper divisors (1).

45251257 is an equidigital number, since it uses as much as digits as its factorization.

45251257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14000, while the sum is 31.

The square root of 45251257 is about 6726.9054549622. The cubic root of 45251257 is about 356.3500979828.

The spelling of 45251257 in words is "forty-five million, two hundred fifty-one thousand, two hundred fifty-seven".