45031661 has 2 divisors, whose sum is σ = 45031662. Its totient is φ = 45031660.

The previous prime is 45031633. The next prime is 45031669. The reversal of 45031661 is 16613054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23222761 + 21808900 = 4819^2 + 4670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45031661 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45031661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45031669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22515830 + 22515831.

It is an arithmetic number, because the mean of its divisors is an integer number (22515831).

Almost surely, 2^45031661 is an apocalyptic number.

It is an amenable number.

45031661 is a deficient number, since it is larger than the sum of its proper divisors (1).

45031661 is an equidigital number, since it uses as much as digits as its factorization.

45031661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 45031661 is about 6710.5633891649. The cubic root of 45031661 is about 355.7727292624.

The spelling of 45031661 in words is "forty-five million, thirty-one thousand, six hundred sixty-one".