45221605 has 16 divisors (see below), whose sum is σ = 63753984. Its totient is φ = 30358080.

The previous prime is 45221599. The next prime is 45221621. The reversal of 45221605 is 50612254.

It is not a de Polignac number, because 45221605 - 2³ = 45221597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45221605.

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, 30909 + ... + 32338.

It is an arithmetic number, because the mean of its divisors is an integer number (3984624).

Almost surely, 2^45221605 is an apocalyptic number.

It is an amenable number.

45221605 is a deficient number, since it is larger than the sum of its proper divisors (18532379).

45221605 is a wasteful number, since it uses less digits than its factorization.

45221605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63276.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 45221605 is about 6724.7011085995. The cubic root of 45221605 is about 356.2722452509.

Adding to 45221605 its reverse (50612254), we get a palindrome (95833859).

The spelling of 45221605 in words is "forty-five million, two hundred twenty-one thousand, six hundred five".