261532753 has 2 divisors, whose sum is σ = 261532754. Its totient is φ = 261532752.

The previous prime is 261532741. The next prime is 261532757. The reversal of 261532753 is 357235162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204861969 + 56670784 = 14313^2 + 7528^2 .

It is a cyclic number.

It is not a de Polignac number, because 261532753 - 2⁵ = 261532721 is a prime.

It is not a weakly prime, because it can be changed into another prime (261532757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130766376 + 130766377.

It is an arithmetic number, because the mean of its divisors is an integer number (130766377).

Almost surely, 2^261532753 is an apocalyptic number.

It is an amenable number.

261532753 is a deficient number, since it is larger than the sum of its proper divisors (1).

261532753 is an equidigital number, since it uses as much as digits as its factorization.

261532753 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 34.

The square root of 261532753 is about 16171.9743074246. The cubic root of 261532753 is about 639.5021787903.

The spelling of 261532753 in words is "two hundred sixty-one million, five hundred thirty-two thousand, seven hundred fifty-three".