45512015 has 4 divisors (see below), whose sum is σ = 54614424. Its totient is φ = 36409608.

The previous prime is 45511997. The next prime is 45512021. The reversal of 45512015 is 51021554.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 45512015 - 2¹⁰ = 45510991 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, 4551197 + ... + 4551206.

It is an arithmetic number, because the mean of its divisors is an integer number (13653606).

Almost surely, 2^45512015 is an apocalyptic number.

45512015 is a deficient number, since it is larger than the sum of its proper divisors (9102409).

45512015 is an equidigital number, since it uses as much as digits as its factorization.

45512015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9102408.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 45512015 is about 6746.2593338827. The cubic root of 45512015 is about 357.0332703394.

Adding to 45512015 its reverse (51021554), we get a palindrome (96533569).

The spelling of 45512015 in words is "forty-five million, five hundred twelve thousand, fifteen".