55776841 has 2 divisors, whose sum is σ = 55776842. Its totient is φ = 55776840.

The previous prime is 55776839. The next prime is 55776857. The reversal of 55776841 is 14867755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55071241 + 705600 = 7421^2 + 840^2 .

It is a cyclic number.

It is not a de Polignac number, because 55776841 - 2¹ = 55776839 is a prime.

It is a super-2 number, since 2×55776841² = 6222111983878562, which contains 22 as substring.

Together with 55776839, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55776811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27888420 + 27888421.

It is an arithmetic number, because the mean of its divisors is an integer number (27888421).

Almost surely, 2^55776841 is an apocalyptic number.

It is an amenable number.

55776841 is a deficient number, since it is larger than the sum of its proper divisors (1).

55776841 is an equidigital number, since it uses as much as digits as its factorization.

55776841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 235200, while the sum is 43.

The square root of 55776841 is about 7468.3894515484. The cubic root of 55776841 is about 382.0773602267.

The spelling of 55776841 in words is "fifty-five million, seven hundred seventy-six thousand, eight hundred forty-one".