261462243 has 8 divisors (see below), whose sum is σ = 398418688. Its totient is φ = 149406984.

The previous prime is 261462241. The next prime is 261462251. The reversal of 261462243 is 342264162.

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

It is not a de Polignac number, because 261462243 - 2¹ = 261462241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 261462243.

It is not an unprimeable number, because it can be changed into a prime (261462241) 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, 6225271 + ... + 6225312.

It is an arithmetic number, because the mean of its divisors is an integer number (49802336).

Almost surely, 2^261462243 is an apocalyptic number.

261462243 is a deficient number, since it is larger than the sum of its proper divisors (136956445).

261462243 is a wasteful number, since it uses less digits than its factorization.

261462243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12450593.

The product of its digits is 13824, while the sum is 30.

The square root of 261462243 is about 16169.7941545339. The cubic root of 261462243 is about 639.4447030682. Note that the first 3 decimals are identical.

The spelling of 261462243 in words is "two hundred sixty-one million, four hundred sixty-two thousand, two hundred forty-three".