45221229 has 6 divisors (see below), whose sum is σ = 65319566. Its totient is φ = 30147480.

The previous prime is 45221227. The next prime is 45221257. The reversal of 45221229 is 92212254.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 45198729 + 22500 = 6723^2 + 150^2 .

It is not a de Polignac number, because 45221229 - 2¹ = 45221227 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45221227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2512282 + ... + 2512299.

Almost surely, 2^45221229 is an apocalyptic number.

It is an amenable number.

45221229 is a deficient number, since it is larger than the sum of its proper divisors (20098337).

45221229 is a wasteful number, since it uses less digits than its factorization.

45221229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024587 (or 5024584 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 45221229 is about 6724.6731519086. The cubic root of 45221229 is about 356.2712578266.

Subtracting 45221229 from its reverse (92212254), we obtain a square (46991025 = 6855²).

The spelling of 45221229 in words is "forty-five million, two hundred twenty-one thousand, two hundred twenty-nine".