45513215 has 16 divisors (see below), whose sum is σ = 59719680. Its totient is φ = 33023520.

The previous prime is 45513211. The next prime is 45513217. The reversal of 45513215 is 51231554.

It is not a de Polignac number, because 45513215 - 2² = 45513211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45513211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34946 + ... + 36224.

It is an arithmetic number, because the mean of its divisors is an integer number (3732480).

Almost surely, 2^45513215 is an apocalyptic number.

45513215 is a deficient number, since it is larger than the sum of its proper divisors (14206465).

45513215 is a wasteful number, since it uses less digits than its factorization.

45513215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942.

The product of its digits is 3000, while the sum is 26.

The square root of 45513215 is about 6746.3482714725. The cubic root of 45513215 is about 357.0364082372.

Adding to 45513215 its reverse (51231554), we get a palindrome (96744769).

The spelling of 45513215 in words is "forty-five million, five hundred thirteen thousand, two hundred fifteen".