55229131 has 2 divisors, whose sum is σ = 55229132. Its totient is φ = 55229130.

The previous prime is 55229129. The next prime is 55229159. The reversal of 55229131 is 13192255.

It is an a-pointer prime, because the next prime (55229159) can be obtained adding 55229131 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55229131 - 2¹ = 55229129 is a prime.

It is a super-2 number, since 2×55229131² = 6100513822030322, which contains 22 as substring.

Together with 55229129, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 55229131.

It is not a weakly prime, because it can be changed into another prime (55229171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27614565 + 27614566.

It is an arithmetic number, because the mean of its divisors is an integer number (27614566).

Almost surely, 2^55229131 is an apocalyptic number.

55229131 is a deficient number, since it is larger than the sum of its proper divisors (1).

55229131 is an equidigital number, since it uses as much as digits as its factorization.

55229131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 28.

The square root of 55229131 is about 7431.6304402197. The cubic root of 55229131 is about 380.8226200394.

The spelling of 55229131 in words is "fifty-five million, two hundred twenty-nine thousand, one hundred thirty-one".