261332200 has 24 divisors (see below), whose sum is σ = 607597830. Its totient is φ = 104532800.

The previous prime is 261332191. The next prime is 261332219. The reversal of 261332200 is 2233162.

It can be written as a sum of positive squares in 3 ways, for example, as 177902244 + 83429956 = 13338^2 + 9134^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 653131 + ... + 653530.

Almost surely, 2^261332200 is an apocalyptic number.

261332200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261332200 is an abundant number, since it is smaller than the sum of its proper divisors (346265630).

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

261332200 is a wasteful number, since it uses less digits than its factorization.

261332200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306677 (or 1306668 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 261332200 is about 16165.7724838623. The cubic root of 261332200 is about 639.3386723381.

Adding to 261332200 its reverse (2233162), we get a palindrome (263565362).

The spelling of 261332200 in words is "two hundred sixty-one million, three hundred thirty-two thousand, two hundred".