45149257 has 2 divisors, whose sum is σ = 45149258. Its totient is φ = 45149256.

The previous prime is 45149243. The next prime is 45149381. The reversal of 45149257 is 75294154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43178041 + 1971216 = 6571^2 + 1404^2 .

It is a cyclic number.

It is not a de Polignac number, because 45149257 - 2⁷ = 45149129 is a prime.

It is not a weakly prime, because it can be changed into another prime (45149227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22574628 + 22574629.

It is an arithmetic number, because the mean of its divisors is an integer number (22574629).

Almost surely, 2^45149257 is an apocalyptic number.

It is an amenable number.

45149257 is a deficient number, since it is larger than the sum of its proper divisors (1).

45149257 is an equidigital number, since it uses as much as digits as its factorization.

45149257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 45149257 is about 6719.3196828250. The cubic root of 45149257 is about 356.0821492237.

The spelling of 45149257 in words is "forty-five million, one hundred forty-nine thousand, two hundred fifty-seven".