261414111 has 8 divisors (see below), whose sum is σ = 398345344. Its totient is φ = 149379480.

The previous prime is 261414017. The next prime is 261414143. The reversal of 261414111 is 111414162.

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

It is not a de Polignac number, because 261414111 - 2⁷ = 261413983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 12448291 = 261414111 / (2 + 6 + 1 + 4 + 1 + 4 + 1 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261414211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6224125 + ... + 6224166.

It is an arithmetic number, because the mean of its divisors is an integer number (49793168).

Almost surely, 2^261414111 is an apocalyptic number.

261414111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

261414111 is a deficient number, since it is larger than the sum of its proper divisors (136931233).

261414111 is a wasteful number, since it uses less digits than its factorization.

261414111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12448301.

The product of its digits is 192, while the sum is 21.

The square root of 261414111 is about 16168.3057553969. The cubic root of 261414111 is about 639.4054626781.

Adding to 261414111 its reverse (111414162), we get a palindrome (372828273).

The spelling of 261414111 in words is "two hundred sixty-one million, four hundred fourteen thousand, one hundred eleven".