45515601 has 24 divisors (see below), whose sum is σ = 68918304. Its totient is φ = 30015360.

The previous prime is 45515563. The next prime is 45515641. The reversal of 45515601 is 10651554.

It is a happy number.

45515601 is a `hidden beast` number, since 4 + 5 + 51 + 5 + 601 = 666.

It is not a de Polignac number, because 45515601 - 2¹¹ = 45513553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (45515641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22606 + ... + 24536.

It is an arithmetic number, because the mean of its divisors is an integer number (2871596).

Almost surely, 2^45515601 is an apocalyptic number.

It is an amenable number.

45515601 is a deficient number, since it is larger than the sum of its proper divisors (23402703).

45515601 is an equidigital number, since it uses as much as digits as its factorization.

45515601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043 (or 2031 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 45515601 is about 6746.5251055636. The cubic root of 45515601 is about 357.0426472602.

The spelling of 45515601 in words is "forty-five million, five hundred fifteen thousand, six hundred one".