261046245 has 8 divisors (see below), whose sum is σ = 417674016. Its totient is φ = 139224656.

The previous prime is 261046243. The next prime is 261046277. The reversal of 261046245 is 542640162.

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

It is a cyclic number.

It is not a de Polignac number, because 261046245 - 2¹ = 261046243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261046241) 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, 8701527 + ... + 8701556.

It is an arithmetic number, because the mean of its divisors is an integer number (52209252).

Almost surely, 2^261046245 is an apocalyptic number.

It is an amenable number.

261046245 is a deficient number, since it is larger than the sum of its proper divisors (156627771).

261046245 is a wasteful number, since it uses less digits than its factorization.

261046245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17403091.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 261046245 is about 16156.9256048297. The cubic root of 261046245 is about 639.1053947790.

The spelling of 261046245 in words is "two hundred sixty-one million, forty-six thousand, two hundred forty-five".