261151374 has 32 divisors (see below), whose sum is σ = 570646656. Its totient is φ = 79017120.

The previous prime is 261151367. The next prime is 261151379. The reversal of 261151374 is 473151162.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261151379) 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, 47349 + ... + 52575.

It is an arithmetic number, because the mean of its divisors is an integer number (17832708).

Almost surely, 2^261151374 is an apocalyptic number.

261151374 is an abundant number, since it is smaller than the sum of its proper divisors (309495282).

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

261151374 is a wasteful number, since it uses less digits than its factorization.

261151374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6000.

The product of its digits is 5040, while the sum is 30.

The square root of 261151374 is about 16160.1786500026. The cubic root of 261151374 is about 639.1911771451.

The spelling of 261151374 in words is "two hundred sixty-one million, one hundred fifty-one thousand, three hundred seventy-four".