5553220261 has 2 divisors, whose sum is σ = 5553220262. Its totient is φ = 5553220260.

The previous prime is 5553220181. The next prime is 5553220313. The reversal of 5553220261 is 1620223555.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3954020161 + 1599200100 = 62881^2 + 39990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5553220261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5553220861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2776610130 + 2776610131.

It is an arithmetic number, because the mean of its divisors is an integer number (2776610131).

Almost surely, 2^5553220261 is an apocalyptic number.

It is an amenable number.

5553220261 is a deficient number, since it is larger than the sum of its proper divisors (1).

5553220261 is an equidigital number, since it uses as much as digits as its factorization.

5553220261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 5553220261 is about 74519.9319712518. The cubic root of 5553220261 is about 1770.8494184472.

The spelling of 5553220261 in words is "five billion, five hundred fifty-three million, two hundred twenty thousand, two hundred sixty-one".