53868391 has 2 divisors, whose sum is σ = 53868392. Its totient is φ = 53868390.

The previous prime is 53868361. The next prime is 53868431. The reversal of 53868391 is 19386835.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53868391 - 2¹¹ = 53866343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53868361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26934195 + 26934196.

It is an arithmetic number, because the mean of its divisors is an integer number (26934196).

Almost surely, 2^53868391 is an apocalyptic number.

53868391 is a deficient number, since it is larger than the sum of its proper divisors (1).

53868391 is an equidigital number, since it uses as much as digits as its factorization.

53868391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 53868391 is about 7339.5089072771. The cubic root of 53868391 is about 377.6689967425.

The spelling of 53868391 in words is "fifty-three million, eight hundred sixty-eight thousand, three hundred ninety-one".