45161866 has 4 divisors (see below), whose sum is σ = 67742802. Its totient is φ = 22580932.

The previous prime is 45161833. The next prime is 45161873. The reversal of 45161866 is 66816154.

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., 39425841 + 5736025 = 6279^2 + 2395^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11290465 + ... + 11290468.

Almost surely, 2^45161866 is an apocalyptic number.

45161866 is a deficient number, since it is larger than the sum of its proper divisors (22580936).

45161866 is a wasteful number, since it uses less digits than its factorization.

45161866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22580935.

The product of its digits is 34560, while the sum is 37.

The square root of 45161866 is about 6720.2578819566. The cubic root of 45161866 is about 356.1152942647.

The spelling of 45161866 in words is "forty-five million, one hundred sixty-one thousand, eight hundred sixty-six".