552221639 has 2 divisors, whose sum is σ = 552221640. Its totient is φ = 552221638.

The previous prime is 552221629. The next prime is 552221671. The reversal of 552221639 is 936122255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 552221639 - 2¹² = 552217543 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 552221599 and 552221608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (552221629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276110819 + 276110820.

It is an arithmetic number, because the mean of its divisors is an integer number (276110820).

Almost surely, 2^552221639 is an apocalyptic number.

552221639 is a deficient number, since it is larger than the sum of its proper divisors (1).

552221639 is an equidigital number, since it uses as much as digits as its factorization.

552221639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 35.

The square root of 552221639 is about 23499.3965667206. The cubic root of 552221639 is about 820.4229619464.

It can be divided in two parts, 5522216 and 39, that added together give a palindrome (5522255).

The spelling of 552221639 in words is "five hundred fifty-two million, two hundred twenty-one thousand, six hundred thirty-nine".