44455661 has 2 divisors, whose sum is σ = 44455662. Its totient is φ = 44455660.

The previous prime is 44455633. The next prime is 44455667. The reversal of 44455661 is 16655444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37332100 + 7123561 = 6110^2 + 2669^2 .

It is a cyclic number.

It is not a de Polignac number, because 44455661 - 2⁶ = 44455597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44455667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22227830 + 22227831.

It is an arithmetic number, because the mean of its divisors is an integer number (22227831).

Almost surely, 2^44455661 is an apocalyptic number.

It is an amenable number.

44455661 is a deficient number, since it is larger than the sum of its proper divisors (1).

44455661 is an equidigital number, since it uses as much as digits as its factorization.

44455661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 35.

The square root of 44455661 is about 6667.5078552635. The cubic root of 44455661 is about 354.2493189766.

The spelling of 44455661 in words is "forty-four million, four hundred fifty-five thousand, six hundred sixty-one".