261274017 has 16 divisors (see below), whose sum is σ = 357400512. Its totient is φ = 169678080.

The previous prime is 261274001. The next prime is 261274019. The reversal of 261274017 is 710472162.

It is not a de Polignac number, because 261274017 - 2⁴ = 261274001 is a prime.

It is a super-2 number, since 2×261274017² = 136528223918632578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (261274019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114118 + ... + 116384.

It is an arithmetic number, because the mean of its divisors is an integer number (22337532).

Almost surely, 2^261274017 is an apocalyptic number.

It is an amenable number.

261274017 is a deficient number, since it is larger than the sum of its proper divisors (96126495).

261274017 is a wasteful number, since it uses less digits than its factorization.

261274017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 261274017 is about 16163.9728099252. The cubic root of 261274017 is about 639.2912213632.

The spelling of 261274017 in words is "two hundred sixty-one million, two hundred seventy-four thousand, seventeen".