55631759 has 2 divisors, whose sum is σ = 55631760. Its totient is φ = 55631758.

The previous prime is 55631659. The next prime is 55631789. The reversal of 55631759 is 95713655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55631759 - 2²⁰ = 54583183 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 (55631789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27815879 + 27815880.

It is an arithmetic number, because the mean of its divisors is an integer number (27815880).

Almost surely, 2^55631759 is an apocalyptic number.

55631759 is a deficient number, since it is larger than the sum of its proper divisors (1).

55631759 is an equidigital number, since it uses as much as digits as its factorization.

55631759 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141750, while the sum is 41.

The square root of 55631759 is about 7458.6700557137. The cubic root of 55631759 is about 381.7457968138.

The spelling of 55631759 in words is "fifty-five million, six hundred thirty-one thousand, seven hundred fifty-nine".