45408257 has 2 divisors, whose sum is σ = 45408258. Its totient is φ = 45408256.

The previous prime is 45408203. The next prime is 45408283. The reversal of 45408257 is 75280454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45104656 + 303601 = 6716^2 + 551^2 .

It is a cyclic number.

It is not a de Polignac number, because 45408257 - 2⁶ = 45408193 is a prime.

It is not a weakly prime, because it can be changed into another prime (45408557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22704128 + 22704129.

It is an arithmetic number, because the mean of its divisors is an integer number (22704129).

It is a Proth number, since it is equal to 5543 ⋅ 2¹³ + 1 and 5543 < 2¹³.

Almost surely, 2^45408257 is an apocalyptic number.

It is an amenable number.

45408257 is a deficient number, since it is larger than the sum of its proper divisors (1).

45408257 is an equidigital number, since it uses as much as digits as its factorization.

45408257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 45408257 is about 6738.5649065658. The cubic root of 45408257 is about 356.7617431726.

The spelling of 45408257 in words is "forty-five million, four hundred eight thousand, two hundred fifty-seven".