261261032 has 16 divisors (see below), whose sum is σ = 518680260. Its totient is φ = 122946304.

The previous prime is 261261019. The next prime is 261261037. The reversal of 261261032 is 230162162.

261261032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 257474116 + 3786916 = 16046^2 + 1946^2 .

It is a junction number, because it is equal to n+sod(n) for n = 261260989 and 261261007.

It is not an unprimeable number, because it can be changed into a prime (261261037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960383 + ... + 960654.

Almost surely, 2^261261032 is an apocalyptic number.

It is an amenable number.

261261032 is a deficient number, since it is larger than the sum of its proper divisors (257419228).

261261032 is a wasteful number, since it uses less digits than its factorization.

261261032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921060 (or 1921056 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 261261032 is about 16163.5711400668. The cubic root of 261261032 is about 639.2806305231.

The spelling of 261261032 in words is "two hundred sixty-one million, two hundred sixty-one thousand, thirty-two".