261084097 has 4 divisors (see below), whose sum is σ = 261140400. Its totient is φ = 261027796.

The previous prime is 261084067. The next prime is 261084101. The reversal of 261084097 is 790480162.

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 a de Polignac number, because none of the positive numbers 2^k-261084097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261084007) 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 in 3 ways as a sum of consecutive naturals, for example, 20503 + ... + 30700.

It is an arithmetic number, because the mean of its divisors is an integer number (65285100).

Almost surely, 2^261084097 is an apocalyptic number.

It is an amenable number.

261084097 is a deficient number, since it is larger than the sum of its proper divisors (56303).

261084097 is an equidigital number, since it uses as much as digits as its factorization.

261084097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56302.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 261084097 is about 16158.0969485890. The cubic root of 261084097 is about 639.1362836205.

The spelling of 261084097 in words is "two hundred sixty-one million, eighty-four thousand, ninety-seven".