45641997 has 12 divisors (see below), whose sum is σ = 66146080. Its totient is φ = 30327048.

The previous prime is 45641993. The next prime is 45642007. The reversal of 45641997 is 79914654.

45641997 is a `hidden beast` number, since 456 + 4 + 199 + 7 = 666.

It is not a de Polignac number, because 45641997 - 2² = 45641993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45641993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5497 + ... + 11022.

Almost surely, 2^45641997 is an apocalyptic number.

It is an amenable number.

45641997 is a deficient number, since it is larger than the sum of its proper divisors (20504083).

45641997 is a wasteful number, since it uses less digits than its factorization.

45641997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16832 (or 16829 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 45641997 is about 6755.8861002832. The cubic root of 45641997 is about 357.3728421228.

It can be divided in two parts, 4564 and 1997, that added together give a 8-th power (6561 = 3⁸).

The spelling of 45641997 in words is "forty-five million, six hundred forty-one thousand, nine hundred ninety-seven".