55967771 has 2 divisors, whose sum is σ = 55967772. Its totient is φ = 55967770.

The previous prime is 55967753. The next prime is 55967777. The reversal of 55967771 is 17776955.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55967771 - 2²² = 51773467 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55967777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27983885 + 27983886.

It is an arithmetic number, because the mean of its divisors is an integer number (27983886).

Almost surely, 2^55967771 is an apocalyptic number.

55967771 is a deficient number, since it is larger than the sum of its proper divisors (1).

55967771 is an equidigital number, since it uses as much as digits as its factorization.

55967771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 463050, while the sum is 47.

The square root of 55967771 is about 7481.1610729886. The cubic root of 55967771 is about 382.5128273996.

The spelling of 55967771 in words is "fifty-five million, nine hundred sixty-seven thousand, seven hundred seventy-one".