54851591 has 2 divisors, whose sum is σ = 54851592. Its totient is φ = 54851590.

The previous prime is 54851581. The next prime is 54851593. The reversal of 54851591 is 19515845.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54851591 - 2¹⁰ = 54850567 is a prime.

Together with 54851593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54851593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27425795 + 27425796.

It is an arithmetic number, because the mean of its divisors is an integer number (27425796).

Almost surely, 2^54851591 is an apocalyptic number.

54851591 is a deficient number, since it is larger than the sum of its proper divisors (1).

54851591 is an equidigital number, since it uses as much as digits as its factorization.

54851591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 38.

The square root of 54851591 is about 7406.1859955040. The cubic root of 54851591 is about 379.9528819695.

The spelling of 54851591 in words is "fifty-four million, eight hundred fifty-one thousand, five hundred ninety-one".