261855334 has 16 divisors (see below), whose sum is σ = 430169040. Its totient is φ = 118807200.

The previous prime is 261855323. The next prime is 261855353. The reversal of 261855334 is 433558162.

It is a junction number, because it is equal to n+sod(n) for n = 261855293 and 261855302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83817 + ... + 86884.

It is an arithmetic number, because the mean of its divisors is an integer number (26885565).

Almost surely, 2^261855334 is an apocalyptic number.

261855334 is a deficient number, since it is larger than the sum of its proper divisors (168313706).

261855334 is a wasteful number, since it uses less digits than its factorization.

261855334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170775.

The product of its digits is 86400, while the sum is 37.

The square root of 261855334 is about 16181.9446915382. The cubic root of 261855334 is about 639.7649967269.

The spelling of 261855334 in words is "two hundred sixty-one million, eight hundred fifty-five thousand, three hundred thirty-four".