45259649 has 4 divisors (see below), whose sum is σ = 45360900. Its totient is φ = 45158400.

The previous prime is 45259631. The next prime is 45259657. The reversal of 45259649 is 94695254.

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 8596624 + 36663025 = 2932^2 + 6055^2 .

It is a cyclic number.

It is not a de Polignac number, because 45259649 - 2⁸ = 45259393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45259619) 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, 49952 + ... + 50849.

It is an arithmetic number, because the mean of its divisors is an integer number (11340225).

It is the magic constant of a 449 × 449 magic square.

Almost surely, 2^45259649 is an apocalyptic number.

It is an amenable number.

45259649 is a deficient number, since it is larger than the sum of its proper divisors (101251).

45259649 is a wasteful number, since it uses less digits than its factorization.

45259649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101250.

The product of its digits is 388800, while the sum is 44.

The square root of 45259649 is about 6727.5291898289. The cubic root of 45259649 is about 356.3721254016.

The spelling of 45259649 in words is "forty-five million, two hundred fifty-nine thousand, six hundred forty-nine".