261084953 has 8 divisors (see below), whose sum is σ = 266872320. Its totient is φ = 255307360.

The previous prime is 261084919. The next prime is 261084959. The reversal of 261084953 is 359480162.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 261084953 - 2¹⁰ = 261083929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261084959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86453 + ... + 89421.

It is an arithmetic number, because the mean of its divisors is an integer number (33359040).

Almost surely, 2^261084953 is an apocalyptic number.

It is an amenable number.

261084953 is a deficient number, since it is larger than the sum of its proper divisors (5787367).

261084953 is a wasteful number, since it uses less digits than its factorization.

261084953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4887.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 261084953 is about 16158.1234368351. The cubic root of 261084953 is about 639.1369821184.

The spelling of 261084953 in words is "two hundred sixty-one million, eighty-four thousand, nine hundred fifty-three".