2251181353 has 2 divisors, whose sum is σ = 2251181354. Its totient is φ = 2251181352.

The previous prime is 2251181323. The next prime is 2251181369. The reversal of 2251181353 is 3531811522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2232751504 + 18429849 = 47252^2 + 4293^2 .

It is a cyclic number.

It is not a de Polignac number, because 2251181353 - 2⁵ = 2251181321 is a prime.

It is not a weakly prime, because it can be changed into another prime (2251181323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125590676 + 1125590677.

It is an arithmetic number, because the mean of its divisors is an integer number (1125590677).

Almost surely, 2^2251181353 is an apocalyptic number.

It is an amenable number.

2251181353 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251181353 is an equidigital number, since it uses as much as digits as its factorization.

2251181353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 31.

The square root of 2251181353 is about 47446.6158224167. The cubic root of 2251181353 is about 1310.5999918463.

Adding to 2251181353 its reverse (3531811522), we get a palindrome (5782992875).

The spelling of 2251181353 in words is "two billion, two hundred fifty-one million, one hundred eighty-one thousand, three hundred fifty-three".