2261213573 has 2 divisors, whose sum is σ = 2261213574. Its totient is φ = 2261213572.

The previous prime is 2261213557. The next prime is 2261213599. The reversal of 2261213573 is 3753121622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1641303169 + 619910404 = 40513^2 + 24898^2 .

It is a cyclic number.

It is not a de Polignac number, because 2261213573 - 2⁴ = 2261213557 is a prime.

It is a super-2 number, since 2×2261213573² = 10226173645438852658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2261213543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130606786 + 1130606787.

It is an arithmetic number, because the mean of its divisors is an integer number (1130606787).

Almost surely, 2^2261213573 is an apocalyptic number.

It is an amenable number.

2261213573 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261213573 is an equidigital number, since it uses as much as digits as its factorization.

2261213573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 2261213573 is about 47552.2194329560. The cubic root of 2261213573 is about 1312.5439703244.

The spelling of 2261213573 in words is "two billion, two hundred sixty-one million, two hundred thirteen thousand, five hundred seventy-three".