55531829 has 2 divisors, whose sum is σ = 55531830. Its totient is φ = 55531828.

The previous prime is 55531807. The next prime is 55531831. The reversal of 55531829 is 92813555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52635025 + 2896804 = 7255^2 + 1702^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55531829 is a prime.

Together with 55531831, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 55531792 and 55531801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55531859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27765914 + 27765915.

It is an arithmetic number, because the mean of its divisors is an integer number (27765915).

Almost surely, 2^55531829 is an apocalyptic number.

It is an amenable number.

55531829 is a deficient number, since it is larger than the sum of its proper divisors (1).

55531829 is an equidigital number, since it uses as much as digits as its factorization.

55531829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 38.

The square root of 55531829 is about 7451.9681292931. The cubic root of 55531829 is about 381.5170861975.

The spelling of 55531829 in words is "fifty-five million, five hundred thirty-one thousand, eight hundred twenty-nine".