55554641 has 2 divisors, whose sum is σ = 55554642. Its totient is φ = 55554640.

The previous prime is 55554593. The next prime is 55554643. The reversal of 55554641 is 14645555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51265600 + 4289041 = 7160^2 + 2071^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55554641 is a prime.

Together with 55554643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55554643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777320 + 27777321.

It is an arithmetic number, because the mean of its divisors is an integer number (27777321).

Almost surely, 2^55554641 is an apocalyptic number.

It is an amenable number.

55554641 is a deficient number, since it is larger than the sum of its proper divisors (1).

55554641 is an equidigital number, since it uses as much as digits as its factorization.

55554641 is an evil number, because the sum of its binary digits is even.

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

The square root of 55554641 is about 7453.4985744951. The cubic root of 55554641 is about 381.5693203634.

The spelling of 55554641 in words is "fifty-five million, five hundred fifty-four thousand, six hundred forty-one".