261412015 has 8 divisors (see below), whose sum is σ = 314092800. Its totient is φ = 208864032.

The previous prime is 261412001. The next prime is 261412031. The reversal of 261412015 is 510214162.

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 261412015 - 2⁹ = 261411503 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28815 + ... + 36784.

It is an arithmetic number, because the mean of its divisors is an integer number (39261600).

Almost surely, 2^261412015 is an apocalyptic number.

261412015 is a deficient number, since it is larger than the sum of its proper divisors (52680785).

261412015 is an equidigital number, since it uses as much as digits as its factorization.

261412015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66401.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 261412015 is about 16168.2409370964. The cubic root of 261412015 is about 639.4037537708.

Adding to 261412015 its reverse (510214162), we get a palindrome (771626177).

The spelling of 261412015 in words is "two hundred sixty-one million, four hundred twelve thousand, fifteen".