55343191 has 2 divisors, whose sum is σ = 55343192. Its totient is φ = 55343190.

The previous prime is 55343173. The next prime is 55343203. The reversal of 55343191 is 19134355.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55343191 - 2⁷ = 55343063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55343131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27671595 + 27671596.

It is an arithmetic number, because the mean of its divisors is an integer number (27671596).

Almost surely, 2^55343191 is an apocalyptic number.

55343191 is a deficient number, since it is larger than the sum of its proper divisors (1).

55343191 is an equidigital number, since it uses as much as digits as its factorization.

55343191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 31.

The square root of 55343191 is about 7439.3004375412. The cubic root of 55343191 is about 381.0845999012.

The spelling of 55343191 in words is "fifty-five million, three hundred forty-three thousand, one hundred ninety-one".