45118251 has 6 divisors (see below), whose sum is σ = 65170820. Its totient is φ = 30078828.

The previous prime is 45118247. The next prime is 45118253. The reversal of 45118251 is 15281154.

45118251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45118251 - 2² = 45118247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45118253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2506561 + ... + 2506578.

Almost surely, 2^45118251 is an apocalyptic number.

45118251 is a deficient number, since it is larger than the sum of its proper divisors (20052569).

45118251 is a wasteful number, since it uses less digits than its factorization.

45118251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5013145 (or 5013142 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

The square root of 45118251 is about 6717.0120589441. The cubic root of 45118251 is about 356.0006180817. Note that the first 3 decimals are identical.

It can be divided in two parts, 45118 and 251, that added together give a square (45369 = 213²).

The spelling of 45118251 in words is "forty-five million, one hundred eighteen thousand, two hundred fifty-one".