45981166 has 16 divisors (see below), whose sum is σ = 85991040. Its totient is φ = 17914680.

The previous prime is 45981137. The next prime is 45981223. The reversal of 45981166 is 66118954.

It is a super-2 number, since 2×45981166² = 4228535253439112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149136 + ... + 149443.

It is an arithmetic number, because the mean of its divisors is an integer number (5374440).

Almost surely, 2^45981166 is an apocalyptic number.

45981166 is a deficient number, since it is larger than the sum of its proper divisors (40009874).

45981166 is a wasteful number, since it uses less digits than its factorization.

45981166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298599.

The product of its digits is 51840, while the sum is 40.

The square root of 45981166 is about 6780.9413800740. The cubic root of 45981166 is about 358.2558796120.

The spelling of 45981166 in words is "forty-five million, nine hundred eighty-one thousand, one hundred sixty-six".