45521615 has 16 divisors (see below), whose sum is σ = 56391552. Its totient is φ = 35257344.

The previous prime is 45521591. The next prime is 45521629. The reversal of 45521615 is 51612554.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 45521615 - 2¹⁰ = 45520591 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 15 ways as a sum of consecutive naturals, for example, 21797 + ... + 23793.

It is an arithmetic number, because the mean of its divisors is an integer number (3524472).

Almost surely, 2^45521615 is an apocalyptic number.

45521615 is a deficient number, since it is larger than the sum of its proper divisors (10869937).

45521615 is a wasteful number, since it uses less digits than its factorization.

45521615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146.

The product of its digits is 6000, while the sum is 29.

The square root of 45521615 is about 6746.9708017747. The cubic root of 45521615 is about 357.0583719778.

The spelling of 45521615 in words is "forty-five million, five hundred twenty-one thousand, six hundred fifteen".