45251291 has 2 divisors, whose sum is σ = 45251292. Its totient is φ = 45251290.

The previous prime is 45251273. The next prime is 45251303. The reversal of 45251291 is 19215254.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45251291 - 2²² = 41056987 is a prime.

It is not a weakly prime, because it can be changed into another prime (45251201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22625645 + 22625646.

It is an arithmetic number, because the mean of its divisors is an integer number (22625646).

Almost surely, 2^45251291 is an apocalyptic number.

45251291 is a deficient number, since it is larger than the sum of its proper divisors (1).

45251291 is an equidigital number, since it uses as much as digits as its factorization.

45251291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 29.

The square root of 45251291 is about 6726.9079821267. The cubic root of 45251291 is about 356.3501872318.

The spelling of 45251291 in words is "forty-five million, two hundred fifty-one thousand, two hundred ninety-one".