45311661 has 12 divisors (see below), whose sum is σ = 66685788. Its totient is φ = 29637504.

The previous prime is 45311653. The next prime is 45311687. The reversal of 45311661 is 16611354.

It can be written as a sum of positive squares in 2 ways, for example, as 16892100 + 28419561 = 4110^2 + 5331^2 .

It is not a de Polignac number, because 45311661 - 2³ = 45311653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45311261) 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, 47020 + ... + 47973.

It is an arithmetic number, because the mean of its divisors is an integer number (5557149).

Almost surely, 2^45311661 is an apocalyptic number.

It is an amenable number.

45311661 is a deficient number, since it is larger than the sum of its proper divisors (21374127).

45311661 is a wasteful number, since it uses less digits than its factorization.

45311661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95052 (or 95049 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 45311661 is about 6731.3936892742. The cubic root of 45311661 is about 356.5085864038.

The spelling of 45311661 in words is "forty-five million, three hundred eleven thousand, six hundred sixty-one".