55254391 has 2 divisors, whose sum is σ = 55254392. Its totient is φ = 55254390.

The previous prime is 55254371. The next prime is 55254443. The reversal of 55254391 is 19345255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55254391 - 2⁷ = 55254263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55254361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27627195 + 27627196.

It is an arithmetic number, because the mean of its divisors is an integer number (27627196).

Almost surely, 2^55254391 is an apocalyptic number.

55254391 is a deficient number, since it is larger than the sum of its proper divisors (1).

55254391 is an equidigital number, since it uses as much as digits as its factorization.

55254391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 34.

The square root of 55254391 is about 7433.3297384147. The cubic root of 55254391 is about 380.8806697982.

The spelling of 55254391 in words is "fifty-five million, two hundred fifty-four thousand, three hundred ninety-one".