261513014 has 16 divisors (see below), whose sum is σ = 458734848. Its totient is φ = 109470312.

The previous prime is 261513001. The next prime is 261513019. The reversal of 261513014 is 410315162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261513019) 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, 216602 + ... + 217805.

It is an arithmetic number, because the mean of its divisors is an integer number (28670928).

Almost surely, 2^261513014 is an apocalyptic number.

261513014 is a deficient number, since it is larger than the sum of its proper divisors (197221834).

261513014 is a wasteful number, since it uses less digits than its factorization.

261513014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434459.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 261513014 is about 16171.3640117338. The cubic root of 261513014 is about 639.4860897270.

Adding to 261513014 its reverse (410315162), we get a palindrome (671828176).

The spelling of 261513014 in words is "two hundred sixty-one million, five hundred thirteen thousand, fourteen".