55275293 has 2 divisors, whose sum is σ = 55275294. Its totient is φ = 55275292.

The previous prime is 55275223. The next prime is 55275323. The reversal of 55275293 is 39257255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32741284 + 22534009 = 5722^2 + 4747^2 .

It is a cyclic number.

It is not a de Polignac number, because 55275293 - 2¹⁸ = 55013149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55275223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27637646 + 27637647.

It is an arithmetic number, because the mean of its divisors is an integer number (27637647).

Almost surely, 2^55275293 is an apocalyptic number.

It is an amenable number.

55275293 is a deficient number, since it is larger than the sum of its proper divisors (1).

55275293 is an equidigital number, since it uses as much as digits as its factorization.

55275293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94500, while the sum is 38.

The square root of 55275293 is about 7434.7355702809. The cubic root of 55275293 is about 380.9286911045.

The spelling of 55275293 in words is "fifty-five million, two hundred seventy-five thousand, two hundred ninety-three".