45445215 has 16 divisors (see below), whose sum is σ = 73162368. Its totient is φ = 24087456.

The previous prime is 45445189. The next prime is 45445219. The reversal of 45445215 is 51254454.

It is not a de Polignac number, because 45445215 - 2⁷ = 45445087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45445219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6849 + ... + 11738.

It is an arithmetic number, because the mean of its divisors is an integer number (4572648).

Almost surely, 2^45445215 is an apocalyptic number.

45445215 is a deficient number, since it is larger than the sum of its proper divisors (27717153).

45445215 is a wasteful number, since it uses less digits than its factorization.

45445215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18758.

The product of its digits is 16000, while the sum is 30.

The square root of 45445215 is about 6741.3066240900. The cubic root of 45445215 is about 356.8585069612.

Adding to 45445215 its reverse (51254454), we get a palindrome (96699669).

The spelling of 45445215 in words is "forty-five million, four hundred forty-five thousand, two hundred fifteen".