55214899 has 2 divisors, whose sum is σ = 55214900. Its totient is φ = 55214898.

The previous prime is 55214897. The next prime is 55214909. The reversal of 55214899 is 99841255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55214899 - 2¹ = 55214897 is a prime.

Together with 55214897, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55214897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27607449 + 27607450.

It is an arithmetic number, because the mean of its divisors is an integer number (27607450).

Almost surely, 2^55214899 is an apocalyptic number.

55214899 is a deficient number, since it is larger than the sum of its proper divisors (1).

55214899 is an equidigital number, since it uses as much as digits as its factorization.

55214899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 43.

The square root of 55214899 is about 7430.6728497492. The cubic root of 55214899 is about 380.7899058235.

It can be divided in two parts, 552 and 14899, that added together give a palindrome (15451).

The spelling of 55214899 in words is "fifty-five million, two hundred fourteen thousand, eight hundred ninety-nine".