45372644 has 6 divisors (see below), whose sum is σ = 79402134. Its totient is φ = 22686320.

The previous prime is 45372637. The next prime is 45372659. The reversal of 45372644 is 44627354.

It can be written as a sum of positive squares in only one way, i.e., 39062500 + 6310144 = 6250^2 + 2512^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5671577 + ... + 5671584.

It is an arithmetic number, because the mean of its divisors is an integer number (13233689).

Almost surely, 2^45372644 is an apocalyptic number.

It is an amenable number.

45372644 is a deficient number, since it is larger than the sum of its proper divisors (34029490).

45372644 is a wasteful number, since it uses less digits than its factorization.

45372644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11343165 (or 11343163 counting only the distinct ones).

The product of its digits is 80640, while the sum is 35.

The square root of 45372644 is about 6735.9219116614. The cubic root of 45372644 is about 356.6684511901.

Adding to 45372644 its reverse (44627354), we get a palindrome (89999998).

The spelling of 45372644 in words is "forty-five million, three hundred seventy-two thousand, six hundred forty-four".