261048 has 32 divisors (see below), whose sum is σ = 666000. Its totient is φ = 85248.

The previous prime is 261043. The next prime is 261059. The reversal of 261048 is 840162.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 261048.

It is not an unprimeable number, because it can be changed into a prime (261043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1678 + ... + 1826.

2²⁶¹⁰⁴⁸ is an apocalyptic number.

It is an amenable number.

261048 is an abundant number, since it is smaller than the sum of its proper divisors (404952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261048 is a wasteful number, since it uses less digits than its factorization.

261048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 261048 is about 510.9285664357. The cubic root of 261048 is about 63.9106827000.

The spelling of 261048 in words is "two hundred sixty-one thousand, forty-eight".