261914 has 4 divisors (see below), whose sum is σ = 392874. Its totient is φ = 130956.

The previous prime is 261887. The next prime is 261917. The reversal of 261914 is 419162.

It is a happy number.

261914 is nontrivially palindromic in base 7.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 419162 = 2 ⋅209581.

It can be written as a sum of positive squares in only one way, i.e., 255025 + 6889 = 505^2 + 83^2 .

It is a Curzon number.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 261914.

It is not an unprimeable number, because it can be changed into a prime (261917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65477 + ... + 65480.

2²⁶¹⁹¹⁴ is an apocalyptic number.

261914 is a deficient number, since it is larger than the sum of its proper divisors (130960).

261914 is a wasteful number, since it uses less digits than its factorization.

261914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130959.

The product of its digits is 432, while the sum is 23.

The square root of 261914 is about 511.7753413364. The cubic root of 261914 is about 63.9812770753.

It can be divided in two parts, 2 and 61914, that added together give a palindrome (61916).

The spelling of 261914 in words is "two hundred sixty-one thousand, nine hundred fourteen".