55677899 has 2 divisors, whose sum is σ = 55677900.
Its totient is φ = 55677898.
The previous prime is 55677893. The next prime is 55677949. The reversal of 55677899 is 99877655.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 55677899 - 216 = 55612363 is a prime.
It is a Chen prime.
It is a plaindrome in base 10.
It is not a weakly prime, because it can be changed into another prime (55677893) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27838949 + 27838950.
It is an arithmetic number, because the mean of its divisors is an integer number (27838950).
Almost surely, 255677899 is an apocalyptic number.
55677899 is a deficient number, since it is larger than the sum of its proper divisors (1).
55677899 is an equidigital number, since it uses as much as digits as its factorization.
55677899 is an evil number, because the sum of its binary digits is even.
The product of its digits is 4762800, while the sum is 56.
The square root of 55677899 is about 7461.7624593657.
The cubic root of 55677899 is about 381.8513053944.
The spelling of 55677899 in words is "fifty-five million, six hundred seventy-seven thousand, eight hundred ninety-nine".