45117251 has 8 divisors (see below), whose sum is σ = 45606240. Its totient is φ = 44630848.

The previous prime is 45117217. The next prime is 45117253. The reversal of 45117251 is 15271154.

45117251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45117251 - 2⁶ = 45117187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45117251.

It is not an unprimeable number, because it can be changed into a prime (45117253) 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 7 ways as a sum of consecutive naturals, for example, 69410 + ... + 70056.

It is an arithmetic number, because the mean of its divisors is an integer number (5700780).

Almost surely, 2^45117251 is an apocalyptic number.

45117251 is a deficient number, since it is larger than the sum of its proper divisors (488989).

45117251 is a wasteful number, since it uses less digits than its factorization.

45117251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293.

The product of its digits is 1400, while the sum is 26.

The square root of 45117251 is about 6716.9376206721. The cubic root of 45117251 is about 355.9979879321.

The spelling of 45117251 in words is "forty-five million, one hundred seventeen thousand, two hundred fifty-one".