55698637 has 2 divisors, whose sum is σ = 55698638. Its totient is φ = 55698636.

The previous prime is 55698611. The next prime is 55698649. The reversal of 55698637 is 73689655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55264356 + 434281 = 7434^2 + 659^2 .

It is a cyclic number.

It is not a de Polignac number, because 55698637 - 2⁷ = 55698509 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 (55698697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27849318 + 27849319.

It is an arithmetic number, because the mean of its divisors is an integer number (27849319).

Almost surely, 2^55698637 is an apocalyptic number.

It is an amenable number.

55698637 is a deficient number, since it is larger than the sum of its proper divisors (1).

55698637 is an equidigital number, since it uses as much as digits as its factorization.

55698637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1360800, while the sum is 49.

The square root of 55698637 is about 7463.1519480713. The cubic root of 55698637 is about 381.8987081015.

The spelling of 55698637 in words is "fifty-five million, six hundred ninety-eight thousand, six hundred thirty-seven".