55023191 has 2 divisors, whose sum is σ = 55023192. Its totient is φ = 55023190.

The previous prime is 55023161. The next prime is 55023251. The reversal of 55023191 is 19132055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55023191 - 2⁶ = 55023127 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55023191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55023151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27511595 + 27511596.

It is an arithmetic number, because the mean of its divisors is an integer number (27511596).

Almost surely, 2^55023191 is an apocalyptic number.

55023191 is a deficient number, since it is larger than the sum of its proper divisors (1).

55023191 is an equidigital number, since it uses as much as digits as its factorization.

55023191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 55023191 is about 7417.7618592133. The cubic root of 55023191 is about 380.3486896383.

The spelling of 55023191 in words is "fifty-five million, twenty-three thousand, one hundred ninety-one".