55457641 has 2 divisors, whose sum is σ = 55457642. Its totient is φ = 55457640.

The previous prime is 55457639. The next prime is 55457681. The reversal of 55457641 is 14675455.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46185616 + 9272025 = 6796^2 + 3045^2 .

It is a cyclic number.

It is not a de Polignac number, because 55457641 - 2¹ = 55457639 is a prime.

Together with 55457639, it forms a pair of twin primes.

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 55457641.

It is not a weakly prime, because it can be changed into another prime (55457681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27728820 + 27728821.

It is an arithmetic number, because the mean of its divisors is an integer number (27728821).

Almost surely, 2^55457641 is an apocalyptic number.

It is an amenable number.

55457641 is a deficient number, since it is larger than the sum of its proper divisors (1).

55457641 is an equidigital number, since it uses as much as digits as its factorization.

55457641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84000, while the sum is 37.

The square root of 55457641 is about 7446.9887202815. The cubic root of 55457641 is about 381.3471139867.

The spelling of 55457641 in words is "fifty-five million, four hundred fifty-seven thousand, six hundred forty-one".