45012001 has 4 divisors (see below), whose sum is σ = 45085572. Its totient is φ = 44938432.

The previous prime is 45011983. The next prime is 45012029. The reversal of 45012001 is 10021054.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9000000 + 36012001 = 3000^2 + 6001^2 .

It is a cyclic number.

It is not a de Polignac number, because 45012001 - 2¹³ = 45003809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45012601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35860 + ... + 37093.

It is an arithmetic number, because the mean of its divisors is an integer number (11271393).

Almost surely, 2^45012001 is an apocalyptic number.

It is an amenable number.

45012001 is a deficient number, since it is larger than the sum of its proper divisors (73571).

45012001 is an equidigital number, since it uses as much as digits as its factorization.

45012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73570.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 45012001 is about 6709.0983745955. The cubic root of 45012001 is about 355.7209471027.

Adding to 45012001 its reverse (10021054), we get a palindrome (55033055).

The spelling of 45012001 in words is "forty-five million, twelve thousand, one".