55798277 has 2 divisors, whose sum is σ = 55798278. Its totient is φ = 55798276.

The previous prime is 55798273. The next prime is 55798279. The reversal of 55798277 is 77289755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55741156 + 57121 = 7466^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 55798277 - 2² = 55798273 is a prime.

It is a super-2 number, since 2×55798277² = 6226895432337458, which contains 22 as substring.

Together with 55798279, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55798273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27899138 + 27899139.

It is an arithmetic number, because the mean of its divisors is an integer number (27899139).

Almost surely, 2^55798277 is an apocalyptic number.

It is an amenable number.

55798277 is a deficient number, since it is larger than the sum of its proper divisors (1).

55798277 is an equidigital number, since it uses as much as digits as its factorization.

55798277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1234800, while the sum is 50.

The square root of 55798277 is about 7469.8244289943. The cubic root of 55798277 is about 382.1263002597.

The spelling of 55798277 in words is "fifty-five million, seven hundred ninety-eight thousand, two hundred seventy-seven".