261112479 has 4 divisors (see below), whose sum is σ = 348149976. Its totient is φ = 174074984.

The previous prime is 261112451. The next prime is 261112493. The reversal of 261112479 is 974211162.

It is a happy number.

261112479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 261112479 - 2¹⁵ = 261079711 is a prime.

It is a super-3 number, since 3×261112479³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261112409) 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, 43518744 + ... + 43518749.

It is an arithmetic number, because the mean of its divisors is an integer number (87037494).

Almost surely, 2^261112479 is an apocalyptic number.

261112479 is a deficient number, since it is larger than the sum of its proper divisors (87037497).

261112479 is an equidigital number, since it uses as much as digits as its factorization.

261112479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87037496.

The product of its digits is 6048, while the sum is 33.

The square root of 261112479 is about 16158.9751840889. The cubic root of 261112479 is about 639.1594425808.

The spelling of 261112479 in words is "two hundred sixty-one million, one hundred twelve thousand, four hundred seventy-nine".