55545641 has 2 divisors, whose sum is σ = 55545642. Its totient is φ = 55545640.

The previous prime is 55545631. The next prime is 55545649. The reversal of 55545641 is 14654555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54096025 + 1449616 = 7355^2 + 1204^2 .

It is a cyclic number.

It is not a de Polignac number, because 55545641 - 2⁶ = 55545577 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (55545649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27772820 + 27772821.

It is an arithmetic number, because the mean of its divisors is an integer number (27772821).

Almost surely, 2^55545641 is an apocalyptic number.

It is an amenable number.

55545641 is a deficient number, since it is larger than the sum of its proper divisors (1).

55545641 is an equidigital number, since it uses as much as digits as its factorization.

55545641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60000, while the sum is 35.

The square root of 55545641 is about 7452.8948067177. The cubic root of 55545641 is about 381.5487141681.

The spelling of 55545641 in words is "fifty-five million, five hundred forty-five thousand, six hundred forty-one".