45649215 has 24 divisors (see below), whose sum is σ = 79497600. Its totient is φ = 24231744.

The previous prime is 45649213. The next prime is 45649223. The reversal of 45649215 is 51294654.

45649215 is a `hidden beast` number, since 4 + 5 + 649 + 2 + 1 + 5 = 666.

It is not a de Polignac number, because 45649215 - 2¹ = 45649213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45649215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45649211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7761 + ... + 12309.

It is an arithmetic number, because the mean of its divisors is an integer number (3312400).

Almost surely, 2^45649215 is an apocalyptic number.

45649215 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

45649215 is a deficient number, since it is larger than the sum of its proper divisors (33848385).

45649215 is a wasteful number, since it uses less digits than its factorization.

45649215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4783 (or 4780 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 45649215 is about 6756.4202800003. The cubic root of 45649215 is about 357.3916798992.

The spelling of 45649215 in words is "forty-five million, six hundred forty-nine thousand, two hundred fifteen".