45190915 has 32 divisors (see below), whose sum is σ = 68304384. Its totient is φ = 27882240.

The previous prime is 45190909. The next prime is 45190919. The reversal of 45190915 is 51909154.

It is a happy number.

It is not a de Polignac number, because 45190915 - 2¹⁵ = 45158147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45190919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40647 + ... + 41743.

It is an arithmetic number, because the mean of its divisors is an integer number (2134512).

Almost surely, 2^45190915 is an apocalyptic number.

45190915 is a deficient number, since it is larger than the sum of its proper divisors (23113469).

45190915 is a wasteful number, since it uses less digits than its factorization.

45190915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 45190915 is about 6722.4188355085. The cubic root of 45190915 is about 356.1916313525.

The spelling of 45190915 in words is "forty-five million, one hundred ninety thousand, nine hundred fifteen".