45144415 has 4 divisors (see below), whose sum is σ = 54173304. Its totient is φ = 36115528.

The previous prime is 45144371. The next prime is 45144431. The reversal of 45144415 is 51444154.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45144415 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 4514437 + ... + 4514446.

It is an arithmetic number, because the mean of its divisors is an integer number (13543326).

Almost surely, 2^45144415 is an apocalyptic number.

45144415 is a deficient number, since it is larger than the sum of its proper divisors (9028889).

45144415 is an equidigital number, since it uses as much as digits as its factorization.

45144415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9028888.

The product of its digits is 6400, while the sum is 28.

The square root of 45144415 is about 6718.9593688309. The cubic root of 45144415 is about 356.0694195096.

Adding to 45144415 its reverse (51444154), we get a palindrome (96588569).

The spelling of 45144415 in words is "forty-five million, one hundred forty-four thousand, four hundred fifteen".