55811359 has 2 divisors, whose sum is σ = 55811360. Its totient is φ = 55811358.

The previous prime is 55811333. The next prime is 55811389. The reversal of 55811359 is 95311855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55811359 - 2²¹ = 53714207 is a prime.

It is a super-2 number, since 2×55811359² = 6229815586853762, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55811309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27905679 + 27905680.

It is an arithmetic number, because the mean of its divisors is an integer number (27905680).

Almost surely, 2^55811359 is an apocalyptic number.

55811359 is a deficient number, since it is larger than the sum of its proper divisors (1).

55811359 is an equidigital number, since it uses as much as digits as its factorization.

55811359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 37.

The square root of 55811359 is about 7470.7000341333. The cubic root of 55811359 is about 382.1561613110.

The spelling of 55811359 in words is "fifty-five million, eight hundred eleven thousand, three hundred fifty-nine".