45451647 has 12 divisors (see below), whose sum is σ = 65719264. Its totient is φ = 30270240.

The previous prime is 45451639. The next prime is 45451711. The reversal of 45451647 is 74615454.

45451647 is a `hidden beast` number, since 4 + 5 + 4 + 5 + 1 + 647 = 666.

It is not a de Polignac number, because 45451647 - 2³ = 45451639 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 (45451447) 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, 9978 + ... + 13800.

Almost surely, 2^45451647 is an apocalyptic number.

45451647 is a deficient number, since it is larger than the sum of its proper divisors (20267617).

45451647 is a wasteful number, since it uses less digits than its factorization.

45451647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5150 (or 5147 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 45451647 is about 6741.7836660635. The cubic root of 45451647 is about 356.8753419250.

The spelling of 45451647 in words is "forty-five million, four hundred fifty-one thousand, six hundred forty-seven".