45521015 has 4 divisors (see below), whose sum is σ = 54625224. Its totient is φ = 36416808.

The previous prime is 45520999. The next prime is 45521023. The reversal of 45521015 is 51012554.

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 45521015 - 2⁴ = 45520999 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, 4552097 + ... + 4552106.

It is an arithmetic number, because the mean of its divisors is an integer number (13656306).

Almost surely, 2^45521015 is an apocalyptic number.

45521015 is a deficient number, since it is larger than the sum of its proper divisors (9104209).

45521015 is an equidigital number, since it uses as much as digits as its factorization.

45521015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9104208.

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

The square root of 45521015 is about 6746.9263372294. The cubic root of 45521015 is about 357.0568032288.

Adding to 45521015 its reverse (51012554), we get a palindrome (96533569).

The spelling of 45521015 in words is "forty-five million, five hundred twenty-one thousand, fifteen".