261158246 has 8 divisors (see below), whose sum is σ = 392622984. Its totient is φ = 130283920.

The previous prime is 261158243. The next prime is 261158257. The reversal of 261158246 is 642851162.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261158243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146495 + ... + 148266.

It is an arithmetic number, because the mean of its divisors is an integer number (49077873).

Almost surely, 2^261158246 is an apocalyptic number.

261158246 is a deficient number, since it is larger than the sum of its proper divisors (131464738).

261158246 is a wasteful number, since it uses less digits than its factorization.

261158246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295206.

The product of its digits is 23040, while the sum is 35.

The square root of 261158246 is about 16160.3912700157. The cubic root of 261158246 is about 639.1967837060.

The spelling of 261158246 in words is "two hundred sixty-one million, one hundred fifty-eight thousand, two hundred forty-six".