261200473 has 4 divisors (see below), whose sum is σ = 261317860. Its totient is φ = 261083088.

The previous prime is 261200453. The next prime is 261200509. The reversal of 261200473 is 374002162.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 146967129 + 114233344 = 12123^2 + 10688^2 .

It is a cyclic number.

It is not a de Polignac number, because 261200473 - 2⁵ = 261200441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261200413) 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, 55290 + ... + 59827.

It is an arithmetic number, because the mean of its divisors is an integer number (65329465).

Almost surely, 2^261200473 is an apocalyptic number.

It is an amenable number.

261200473 is a deficient number, since it is larger than the sum of its proper divisors (117387).

261200473 is a wasteful number, since it uses less digits than its factorization.

261200473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117386.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 261200473 is about 16161.6977140398. The cubic root of 261200473 is about 639.2312326890.

The spelling of 261200473 in words is "two hundred sixty-one million, two hundred thousand, four hundred seventy-three".