261051095 has 16 divisors (see below), whose sum is σ = 326545248. Its totient is φ = 200154240.

The previous prime is 261051083. The next prime is 261051107. The reversal of 261051095 is 590150162.

It is an interprime number because it is at equal distance from previous prime (261051083) and next prime (261051107).

It is not a de Polignac number, because 261051095 - 2²⁴ = 244273879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1865 + ... + 22925.

It is an arithmetic number, because the mean of its divisors is an integer number (20409078).

Almost surely, 2^261051095 is an apocalyptic number.

261051095 is a deficient number, since it is larger than the sum of its proper divisors (65494153).

261051095 is a wasteful number, since it uses less digits than its factorization.

261051095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21170.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 261051095 is about 16157.0756945680. The cubic root of 261051095 is about 639.1093527520.

The spelling of 261051095 in words is "two hundred sixty-one million, fifty-one thousand, ninety-five".