261032573 has 2 divisors, whose sum is σ = 261032574. Its totient is φ = 261032572.

The previous prime is 261032549. The next prime is 261032627. The reversal of 261032573 is 375230162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260435044 + 597529 = 16138^2 + 773^2 .

It is a cyclic number.

It is not a de Polignac number, because 261032573 - 2¹² = 261028477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261032173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130516286 + 130516287.

It is an arithmetic number, because the mean of its divisors is an integer number (130516287).

Almost surely, 2^261032573 is an apocalyptic number.

It is an amenable number.

261032573 is a deficient number, since it is larger than the sum of its proper divisors (1).

261032573 is an equidigital number, since it uses as much as digits as its factorization.

261032573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 261032573 is about 16156.5024989940. The cubic root of 261032573 is about 639.0942371116.

The spelling of 261032573 in words is "two hundred sixty-one million, thirty-two thousand, five hundred seventy-three".