261057875 has 16 divisors (see below), whose sum is σ = 350863968. Its totient is φ = 192780000.

The previous prime is 261057871. The next prime is 261057883. The reversal of 261057875 is 578750162.

It is not a de Polignac number, because 261057875 - 2² = 261057871 is a prime.

It is a super-3 number, since 3×261057875³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (261057871) 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, 78701 + ... + 81950.

It is an arithmetic number, because the mean of its divisors is an integer number (21928998).

Almost surely, 2^261057875 is an apocalyptic number.

261057875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

261057875 is a deficient number, since it is larger than the sum of its proper divisors (89806093).

261057875 is a wasteful number, since it uses less digits than its factorization.

261057875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160679 (or 160669 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 41.

The square root of 261057875 is about 16157.2855084015. The cubic root of 261057875 is about 639.1148856713.

The spelling of 261057875 in words is "two hundred sixty-one million, fifty-seven thousand, eight hundred seventy-five".