55691759 has 2 divisors, whose sum is σ = 55691760. Its totient is φ = 55691758.

The previous prime is 55691747. The next prime is 55691789. The reversal of 55691759 is 95719655.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55691759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55691729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27845879 + 27845880.

It is an arithmetic number, because the mean of its divisors is an integer number (27845880).

Almost surely, 2^55691759 is an apocalyptic number.

55691759 is a deficient number, since it is larger than the sum of its proper divisors (1).

55691759 is an equidigital number, since it uses as much as digits as its factorization.

55691759 is an evil number, because the sum of its binary digits is even.

The product of its digits is 425250, while the sum is 47.

The square root of 55691759 is about 7462.6911365807. The cubic root of 55691759 is about 381.8829877441.

The spelling of 55691759 in words is "fifty-five million, six hundred ninety-one thousand, seven hundred fifty-nine".