45640971 has 12 divisors (see below), whose sum is σ = 69804072. Its totient is φ = 28637376.

The previous prime is 45640967. The next prime is 45640979. The reversal of 45640971 is 17904654.

45640971 is a `hidden beast` number, since 4 + 5 + 640 + 9 + 7 + 1 = 666.

45640971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45640971 - 2² = 45640967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45640979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149001 + ... + 149306.

It is an arithmetic number, because the mean of its divisors is an integer number (5817006).

Almost surely, 2^45640971 is an apocalyptic number.

45640971 is a deficient number, since it is larger than the sum of its proper divisors (24163101).

45640971 is a wasteful number, since it uses less digits than its factorization.

45640971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298330 (or 298327 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 45640971 is about 6755.8101660719. The cubic root of 45640971 is about 357.3701642727.

The spelling of 45640971 in words is "forty-five million, six hundred forty thousand, nine hundred seventy-one".