45222661 has 12 divisors (see below), whose sum is σ = 50233036. Its totient is φ = 40677120.

The previous prime is 45222643. The next prime is 45222673. The reversal of 45222661 is 16622254.

It can be written as a sum of positive squares in 2 ways, for example, as 36072036 + 9150625 = 6006^2 + 3025^2 .

It is not a de Polignac number, because 45222661 - 2¹¹ = 45220613 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 (45222161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9811 + ... + 13663.

Almost surely, 2^45222661 is an apocalyptic number.

It is an amenable number.

45222661 is a deficient number, since it is larger than the sum of its proper divisors (5010375).

45222661 is a wasteful number, since it uses less digits than its factorization.

45222661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3972 (or 3961 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 45222661 is about 6724.7796246420. The cubic root of 45222661 is about 356.2750184133.

The spelling of 45222661 in words is "forty-five million, two hundred twenty-two thousand, six hundred sixty-one".