55039256693 has 2 divisors, whose sum is σ = 55039256694. Its totient is φ = 55039256692.

The previous prime is 55039256603. The next prime is 55039256707. The reversal of 55039256693 is 39665293055.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36560116849 + 18479139844 = 191207^2 + 135938^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55039256693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55039256603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27519628346 + 27519628347.

It is an arithmetic number, because the mean of its divisors is an integer number (27519628347).

Almost surely, 2^55039256693 is an apocalyptic number.

It is an amenable number.

55039256693 is a deficient number, since it is larger than the sum of its proper divisors (1).

55039256693 is an equidigital number, since it uses as much as digits as its factorization.

55039256693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561000, while the sum is 53.

The spelling of 55039256693 in words is "fifty-five billion, thirty-nine million, two hundred fifty-six thousand, six hundred ninety-three".