55651259 has 2 divisors, whose sum is σ = 55651260. Its totient is φ = 55651258.

The previous prime is 55651249. The next prime is 55651301. The reversal of 55651259 is 95215655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55651259 - 2²⁰ = 54602683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55651229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27825629 + 27825630.

It is an arithmetic number, because the mean of its divisors is an integer number (27825630).

Almost surely, 2^55651259 is an apocalyptic number.

55651259 is a deficient number, since it is larger than the sum of its proper divisors (1).

55651259 is an equidigital number, since it uses as much as digits as its factorization.

55651259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67500, while the sum is 38.

The square root of 55651259 is about 7459.9771447371. The cubic root of 55651259 is about 381.7903946812.

It can be divided in two parts, 556 and 51259, that added together give a palindrome (51815).

The spelling of 55651259 in words is "fifty-five million, six hundred fifty-one thousand, two hundred fifty-nine".