261530352 has 60 divisors (see below), whose sum is σ = 757172520. Its totient is φ = 84169344.

The previous prime is 261530351. The next prime is 261530359. The reversal of 261530352 is 253035162.

261530352 is a `hidden beast` number, since 261 + 53 + 0 + 352 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261530351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27138 + ... + 35489.

It is an arithmetic number, because the mean of its divisors is an integer number (12619542).

Almost surely, 2^261530352 is an apocalyptic number.

It is an amenable number.

261530352 is an abundant number, since it is smaller than the sum of its proper divisors (495642168).

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

261530352 is a wasteful number, since it uses less digits than its factorization.

261530352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62670 (or 62661 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 261530352 is about 16171.9000738936. The cubic root of 261530352 is about 639.5002218022.

The spelling of 261530352 in words is "two hundred sixty-one million, five hundred thirty thousand, three hundred fifty-two".