542223251 has 2 divisors, whose sum is σ = 542223252. Its totient is φ = 542223250.

The previous prime is 542223239. The next prime is 542223257. The reversal of 542223251 is 152322245.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 542223251 - 2¹⁰ = 542222227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 542223251.

It is not a weakly prime, because it can be changed into another prime (542223257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271111625 + 271111626.

It is an arithmetic number, because the mean of its divisors is an integer number (271111626).

Almost surely, 2^542223251 is an apocalyptic number.

542223251 is a deficient number, since it is larger than the sum of its proper divisors (1).

542223251 is an equidigital number, since it uses as much as digits as its factorization.

542223251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 26.

The square root of 542223251 is about 23285.6876857867. The cubic root of 542223251 is about 815.4413161835.

Adding to 542223251 its reverse (152322245), we get a palindrome (694545496).

The spelling of 542223251 in words is "five hundred forty-two million, two hundred twenty-three thousand, two hundred fifty-one".