55751771 has 2 divisors, whose sum is σ = 55751772. Its totient is φ = 55751770.

The previous prime is 55751749. The next prime is 55751791. The reversal of 55751771 is 17715755.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55751771 - 2¹⁸ = 55489627 is a prime.

It is not a weakly prime, because it can be changed into another prime (55751791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27875885 + 27875886.

It is an arithmetic number, because the mean of its divisors is an integer number (27875886).

Almost surely, 2^55751771 is an apocalyptic number.

55751771 is a deficient number, since it is larger than the sum of its proper divisors (1).

55751771 is an equidigital number, since it uses as much as digits as its factorization.

55751771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42875, while the sum is 38.

The square root of 55751771 is about 7466.7108555240. The cubic root of 55751771 is about 382.0201075826.

The spelling of 55751771 in words is "fifty-five million, seven hundred fifty-one thousand, seven hundred seventy-one".