3155240261 has 2 divisors, whose sum is σ = 3155240262. Its totient is φ = 3155240260.

The previous prime is 3155240227. The next prime is 3155240267. The reversal of 3155240261 is 1620425513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3036561025 + 118679236 = 55105^2 + 10894^2 .

It is a cyclic number.

It is not a de Polignac number, because 3155240261 - 2³⁰ = 2081498437 is a prime.

It is a super-2 number, since 2×3155240261² = 19911082209270696242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3155240267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1577620130 + 1577620131.

It is an arithmetic number, because the mean of its divisors is an integer number (1577620131).

Almost surely, 2^3155240261 is an apocalyptic number.

It is an amenable number.

3155240261 is a deficient number, since it is larger than the sum of its proper divisors (1).

3155240261 is an equidigital number, since it uses as much as digits as its factorization.

3155240261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 3155240261 is about 56171.5253576045. The cubic root of 3155240261 is about 1466.7096351450.

Adding to 3155240261 its reverse (1620425513), we get a palindrome (4775665774).

The spelling of 3155240261 in words is "three billion, one hundred fifty-five million, two hundred forty thousand, two hundred sixty-one".