55638367 has 2 divisors, whose sum is σ = 55638368. Its totient is φ = 55638366.

The previous prime is 55638347. The next prime is 55638371. The reversal of 55638367 is 76383655.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55638367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55638307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27819183 + 27819184.

It is an arithmetic number, because the mean of its divisors is an integer number (27819184).

Almost surely, 2^55638367 is an apocalyptic number.

55638367 is a deficient number, since it is larger than the sum of its proper divisors (1).

55638367 is an equidigital number, since it uses as much as digits as its factorization.

55638367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 43.

The square root of 55638367 is about 7459.1130169746. The cubic root of 55638367 is about 381.7609109404.

The spelling of 55638367 in words is "fifty-five million, six hundred thirty-eight thousand, three hundred sixty-seven".