45049257 has 16 divisors (see below), whose sum is σ = 72807360. Its totient is φ = 27302400.

The previous prime is 45049241. The next prime is 45049289. The reversal of 45049257 is 75294054.

It is not a de Polignac number, because 45049257 - 2⁴ = 45049241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45049217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75544 + ... + 76137.

It is an arithmetic number, because the mean of its divisors is an integer number (4550460).

Almost surely, 2^45049257 is an apocalyptic number.

It is an amenable number.

45049257 is a deficient number, since it is larger than the sum of its proper divisors (27758103).

45049257 is a wasteful number, since it uses less digits than its factorization.

45049257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151701 (or 151695 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 45049257 is about 6711.8743283825. The cubic root of 45049257 is about 355.8190623061.

The spelling of 45049257 in words is "forty-five million, forty-nine thousand, two hundred fifty-seven".