55851893 has 2 divisors, whose sum is σ = 55851894. Its totient is φ = 55851892.

The previous prime is 55851871. The next prime is 55851899. The reversal of 55851893 is 39815855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27952369 + 27899524 = 5287^2 + 5282^2 .

It is a cyclic number.

It is not a de Polignac number, because 55851893 - 2¹⁰ = 55850869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55851899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27925946 + 27925947.

It is an arithmetic number, because the mean of its divisors is an integer number (27925947).

Almost surely, 2^55851893 is an apocalyptic number.

It is an amenable number.

55851893 is a deficient number, since it is larger than the sum of its proper divisors (1).

55851893 is an equidigital number, since it uses as much as digits as its factorization.

55851893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216000, while the sum is 44.

The square root of 55851893 is about 7473.4124066587. The cubic root of 55851893 is about 382.2486548439.

The spelling of 55851893 in words is "fifty-five million, eight hundred fifty-one thousand, eight hundred ninety-three".