55764899 has 2 divisors, whose sum is σ = 55764900. Its totient is φ = 55764898.

The previous prime is 55764881. The next prime is 55764911. The reversal of 55764899 is 99846755.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55764899 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55764899.

It is not a weakly prime, because it can be changed into another prime (55760899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27882449 + 27882450.

It is an arithmetic number, because the mean of its divisors is an integer number (27882450).

Almost surely, 2^55764899 is an apocalyptic number.

55764899 is a deficient number, since it is larger than the sum of its proper divisors (1).

55764899 is an equidigital number, since it uses as much as digits as its factorization.

55764899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 53.

The square root of 55764899 is about 7467.5899057192. The cubic root of 55764899 is about 382.0500902856.

It can be divided in two parts, 557 and 64899, that added together give a palindrome (65456).

The spelling of 55764899 in words is "fifty-five million, seven hundred sixty-four thousand, eight hundred ninety-nine".