55242529 has 2 divisors, whose sum is σ = 55242530. Its totient is φ = 55242528.

The previous prime is 55242521. The next prime is 55242541. The reversal of 55242529 is 92524255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41254929 + 13987600 = 6423^2 + 3740^2 .

It is a cyclic number.

It is not a de Polignac number, because 55242529 - 2³ = 55242521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55242494 and 55242503.

It is not a weakly prime, because it can be changed into another prime (55242521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27621264 + 27621265.

It is an arithmetic number, because the mean of its divisors is an integer number (27621265).

Almost surely, 2^55242529 is an apocalyptic number.

It is an amenable number.

55242529 is a deficient number, since it is larger than the sum of its proper divisors (1).

55242529 is an equidigital number, since it uses as much as digits as its factorization.

55242529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 34.

The square root of 55242529 is about 7432.5318028247. The cubic root of 55242529 is about 380.8534120559.

The spelling of 55242529 in words is "fifty-five million, two hundred forty-two thousand, five hundred twenty-nine".