261125843 has 32 divisors (see below), whose sum is σ = 303464448. Its totient is φ = 222566400.

The previous prime is 261125827. The next prime is 261125857. The reversal of 261125843 is 348521162.

It is a cyclic number.

It is not a de Polignac number, because 261125843 - 2⁴ = 261125827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261125143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2056046 + ... + 2056172.

It is an arithmetic number, because the mean of its divisors is an integer number (9483264).

Almost surely, 2^261125843 is an apocalyptic number.

261125843 is a deficient number, since it is larger than the sum of its proper divisors (42338605).

261125843 is a wasteful number, since it uses less digits than its factorization.

261125843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323.

The product of its digits is 11520, while the sum is 32.

The square root of 261125843 is about 16159.3886951209. The cubic root of 261125843 is about 639.1703466697.

The spelling of 261125843 in words is "two hundred sixty-one million, one hundred twenty-five thousand, eight hundred forty-three".