45972278 has 16 divisors (see below), whose sum is σ = 77261904. Its totient is φ = 20331360.

The previous prime is 45972257. The next prime is 45972307. The reversal of 45972278 is 87227954.

It is a super-2 number, since 2×45972278² = 4226900689018568, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27425 + ... + 29052.

It is an arithmetic number, because the mean of its divisors is an integer number (4828869).

Almost surely, 2^45972278 is an apocalyptic number.

45972278 is a deficient number, since it is larger than the sum of its proper divisors (31289626).

45972278 is a wasteful number, since it uses less digits than its factorization.

45972278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56527.

The product of its digits is 282240, while the sum is 44.

The square root of 45972278 is about 6780.2859821692. The cubic root of 45972278 is about 358.2327949180.

The spelling of 45972278 in words is "forty-five million, nine hundred seventy-two thousand, two hundred seventy-eight".