45451418 has 4 divisors (see below), whose sum is σ = 68177130. Its totient is φ = 22725708.

The previous prime is 45451403. The next prime is 45451423. The reversal of 45451418 is 81415454.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37368769 + 8082649 = 6113^2 + 2843^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11362853 + ... + 11362856.

Almost surely, 2^45451418 is an apocalyptic number.

45451418 is a deficient number, since it is larger than the sum of its proper divisors (22725712).

45451418 is a wasteful number, since it uses less digits than its factorization.

45451418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22725711.

The product of its digits is 12800, while the sum is 32.

The square root of 45451418 is about 6741.7666824060. The cubic root of 45451418 is about 356.8747425731.

The spelling of 45451418 in words is "forty-five million, four hundred fifty-one thousand, four hundred eighteen".