261003413 has 12 divisors (see below), whose sum is σ = 288275904. Its totient is φ = 236128200.

The previous prime is 261003409. The next prime is 261003481. The reversal of 261003413 is 314300162.

It is not a de Polignac number, because 261003413 - 2² = 261003409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261003403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20420 + ... + 30642.

It is an arithmetic number, because the mean of its divisors is an integer number (24022992).

Almost surely, 2^261003413 is an apocalyptic number.

It is an amenable number.

261003413 is a deficient number, since it is larger than the sum of its proper divisors (27272491).

261003413 is a wasteful number, since it uses less digits than its factorization.

261003413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10456 (or 10445 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 261003413 is about 16155.6000507564. The cubic root of 261003413 is about 639.0704384445.

Adding to 261003413 its reverse (314300162), we get a palindrome (575303575).

The spelling of 261003413 in words is "two hundred sixty-one million, three thousand, four hundred thirteen".