55228829 has 2 divisors, whose sum is σ = 55228830. Its totient is φ = 55228828.

The previous prime is 55228783. The next prime is 55228843. The reversal of 55228829 is 92882255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33120025 + 22108804 = 5755^2 + 4702^2 .

It is a cyclic number.

It is not a de Polignac number, because 55228829 - 2²⁴ = 38451613 is a prime.

It is a super-2 number, since 2×55228829² = 6100447105422482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55228889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27614414 + 27614415.

It is an arithmetic number, because the mean of its divisors is an integer number (27614415).

Almost surely, 2^55228829 is an apocalyptic number.

It is an amenable number.

55228829 is a deficient number, since it is larger than the sum of its proper divisors (1).

55228829 is an equidigital number, since it uses as much as digits as its factorization.

55228829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 41.

The square root of 55228829 is about 7431.6101216358. The cubic root of 55228829 is about 380.8219259091.

The spelling of 55228829 in words is "fifty-five million, two hundred twenty-eight thousand, eight hundred twenty-nine".