555833261 has 2 divisors, whose sum is σ = 555833262. Its totient is φ = 555833260.

The previous prime is 555833251. The next prime is 555833263. The reversal of 555833261 is 162338555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 488675236 + 67158025 = 22106^2 + 8195^2 .

It is a cyclic number.

It is not a de Polignac number, because 555833261 - 2⁶ = 555833197 is a prime.

It is a super-2 number, since 2×555833261² = 617901228067788242, which contains 22 as substring.

Together with 555833263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555833263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277916630 + 277916631.

It is an arithmetic number, because the mean of its divisors is an integer number (277916631).

Almost surely, 2^555833261 is an apocalyptic number.

It is an amenable number.

555833261 is a deficient number, since it is larger than the sum of its proper divisors (1).

555833261 is an equidigital number, since it uses as much as digits as its factorization.

555833261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 38.

The square root of 555833261 is about 23576.1163256377. The cubic root of 555833261 is about 822.2076447305.

The spelling of 555833261 in words is "five hundred fifty-five million, eight hundred thirty-three thousand, two hundred sixty-one".