55275893 has 2 divisors, whose sum is σ = 55275894. Its totient is φ = 55275892.

The previous prime is 55275851. The next prime is 55275911. The reversal of 55275893 is 39857255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50154724 + 5121169 = 7082^2 + 2263^2 .

It is a cyclic number.

It is not a de Polignac number, because 55275893 - 2⁸ = 55275637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55275833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27637946 + 27637947.

It is an arithmetic number, because the mean of its divisors is an integer number (27637947).

Almost surely, 2^55275893 is an apocalyptic number.

It is an amenable number.

55275893 is a deficient number, since it is larger than the sum of its proper divisors (1).

55275893 is an equidigital number, since it uses as much as digits as its factorization.

55275893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 378000, while the sum is 44.

The square root of 55275893 is about 7434.7759213039. The cubic root of 55275893 is about 380.9300693959.

The spelling of 55275893 in words is "fifty-five million, two hundred seventy-five thousand, eight hundred ninety-three".