55093697 has 2 divisors, whose sum is σ = 55093698. Its totient is φ = 55093696.

The previous prime is 55093679. The next prime is 55093699. The reversal of 55093697 is 79639055.

Together with previous prime (55093679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46117681 + 8976016 = 6791^2 + 2996^2 .

It is a cyclic number.

It is not a de Polignac number, because 55093697 - 2²² = 50899393 is a prime.

Together with 55093699, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55093699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27546848 + 27546849.

It is an arithmetic number, because the mean of its divisors is an integer number (27546849).

Almost surely, 2^55093697 is an apocalyptic number.

55093697 is the 3968-th centered heptagonal number.

It is an amenable number.

55093697 is a deficient number, since it is larger than the sum of its proper divisors (1).

55093697 is an equidigital number, since it uses as much as digits as its factorization.

55093697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 255150, while the sum is 44.

The square root of 55093697 is about 7422.5128494331. The cubic root of 55093697 is about 380.5110782488.

The spelling of 55093697 in words is "fifty-five million, ninety-three thousand, six hundred ninety-seven".