45751918 has 4 divisors (see below), whose sum is σ = 68627880. Its totient is φ = 22875958.

The previous prime is 45751907. The next prime is 45751919. The reversal of 45751918 is 81915754.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81915754 = 2 ⋅40957877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45751919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11437978 + ... + 11437981.

It is an arithmetic number, because the mean of its divisors is an integer number (17156970).

Almost surely, 2^45751918 is an apocalyptic number.

45751918 is a deficient number, since it is larger than the sum of its proper divisors (22875962).

45751918 is a wasteful number, since it uses less digits than its factorization.

45751918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22875961.

The product of its digits is 50400, while the sum is 40.

The square root of 45751918 is about 6764.0164103881. The cubic root of 45751918 is about 357.6595027247.

The spelling of 45751918 in words is "forty-five million, seven hundred fifty-one thousand, nine hundred eighteen".