261051413 has 8 divisors (see below), whose sum is σ = 299994240. Its totient is φ = 222521040.

The previous prime is 261051407. The next prime is 261051419. The reversal of 261051413 is 314150162.

It is an interprime number because it is at equal distance from previous prime (261051407) and next prime (261051419).

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

It is not a de Polignac number, because 261051413 - 2⁴ = 261051397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261051419) 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, 101753 + ... + 104286.

It is an arithmetic number, because the mean of its divisors is an integer number (37499280).

Almost surely, 2^261051413 is an apocalyptic number.

It is an amenable number.

261051413 is a deficient number, since it is larger than the sum of its proper divisors (38942827).

261051413 is a wasteful number, since it uses less digits than its factorization.

261051413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206227.

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

The square root of 261051413 is about 16157.0855354547. The cubic root of 261051413 is about 639.1096122628.

The spelling of 261051413 in words is "two hundred sixty-one million, fifty-one thousand, four hundred thirteen".