45478538 has 8 divisors (see below), whose sum is σ = 77963232. Its totient is φ = 19490796.

The previous prime is 45478529. The next prime is 45478541. The reversal of 45478538 is 83587454.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1624220 + ... + 1624247.

It is an arithmetic number, because the mean of its divisors is an integer number (9745404).

Almost surely, 2^45478538 is an apocalyptic number.

45478538 is a deficient number, since it is larger than the sum of its proper divisors (32484694).

45478538 is a wasteful number, since it uses less digits than its factorization.

45478538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248476.

The product of its digits is 537600, while the sum is 44.

The square root of 45478538 is about 6743.7777246881. Note that the first 4 decimals coincide. The cubic root of 45478538 is about 356.9457085928.

The spelling of 45478538 in words is "forty-five million, four hundred seventy-eight thousand, five hundred thirty-eight".