45972178 has 8 divisors (see below), whose sum is σ = 78809472. Its totient is φ = 19702356.

The previous prime is 45972161. The next prime is 45972181. The reversal of 45972178 is 87127954.

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

It is a super-2 number, since 2×45972178² = 4226882300127368, which contains 22 as substring.

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, 1641850 + ... + 1641877.

It is an arithmetic number, because the mean of its divisors is an integer number (9851184).

Almost surely, 2^45972178 is an apocalyptic number.

45972178 is a deficient number, since it is larger than the sum of its proper divisors (32837294).

45972178 is a wasteful number, since it uses less digits than its factorization.

45972178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283736.

The product of its digits is 141120, while the sum is 43.

The square root of 45972178 is about 6780.2786078450. The cubic root of 45972178 is about 358.2325351722.

The spelling of 45972178 in words is "forty-five million, nine hundred seventy-two thousand, one hundred seventy-eight".