45142945 has 4 divisors (see below), whose sum is σ = 54171540. Its totient is φ = 36114352.

The previous prime is 45142921. The next prime is 45142957. The reversal of 45142945 is 54924154.

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 33039504 + 12103441 = 5748^2 + 3479^2 .

It is a cyclic number.

It is not a de Polignac number, because 45142945 - 2¹³ = 45134753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45142945.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4514290 + ... + 4514299.

It is an arithmetic number, because the mean of its divisors is an integer number (13542885).

Almost surely, 2^45142945 is an apocalyptic number.

It is an amenable number.

45142945 is a deficient number, since it is larger than the sum of its proper divisors (9028595).

45142945 is an equidigital number, since it uses as much as digits as its factorization.

45142945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9028594.

The product of its digits is 28800, while the sum is 34.

The square root of 45142945 is about 6718.8499760004. The cubic root of 45142945 is about 356.0655546703.

The spelling of 45142945 in words is "forty-five million, one hundred forty-two thousand, nine hundred forty-five".