261062097 has 4 divisors (see below), whose sum is σ = 348082800. Its totient is φ = 174041396.

The previous prime is 261062077. The next prime is 261062119. The reversal of 261062097 is 790260162.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 261062097 - 2⁸ = 261061841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261062027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43510347 + ... + 43510352.

It is an arithmetic number, because the mean of its divisors is an integer number (87020700).

Almost surely, 2^261062097 is an apocalyptic number.

It is an amenable number.

261062097 is a deficient number, since it is larger than the sum of its proper divisors (87020703).

261062097 is an equidigital number, since it uses as much as digits as its factorization.

261062097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87020702.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 261062097 is about 16157.4161610079. The cubic root of 261062097 is about 639.1183310484.

It can be divided in two parts, 26106 and 2097, that added together give a triangular number (28203 = T₂₃₇).

The spelling of 261062097 in words is "two hundred sixty-one million, sixty-two thousand, ninety-seven".