261530214 has 32 divisors (see below), whose sum is σ = 583887744. Its totient is φ = 77407680.

The previous prime is 261530189. The next prime is 261530237. The reversal of 261530214 is 412035162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43239 + ... + 48914.

It is an arithmetic number, because the mean of its divisors is an integer number (18246492).

Almost surely, 2^261530214 is an apocalyptic number.

261530214 is an abundant number, since it is smaller than the sum of its proper divisors (322357530).

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

261530214 is a wasteful number, since it uses less digits than its factorization.

261530214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92212.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 261530214 is about 16171.8958072330. The cubic root of 261530214 is about 639.5001093219.

Adding to 261530214 its reverse (412035162), we get a palindrome (673565376).

The spelling of 261530214 in words is "two hundred sixty-one million, five hundred thirty thousand, two hundred fourteen".