245314261 has 4 divisors (see below), whose sum is σ = 247843372. Its totient is φ = 242785152.

The previous prime is 245314259. The next prime is 245314273. The reversal of 245314261 is 162413542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 162413542 = 2 ⋅81206771.

It can be written as a sum of positive squares in 2 ways, for example, as 31979025 + 213335236 = 5655^2 + 14606^2 .

It is a cyclic number.

It is not a de Polignac number, because 245314261 - 2¹ = 245314259 is a prime.

It is a super-2 number, since 2×245314261² = 120358173299952242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245314211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1264410 + ... + 1264603.

It is an arithmetic number, because the mean of its divisors is an integer number (61960843).

Almost surely, 2^245314261 is an apocalyptic number.

It is an amenable number.

245314261 is a deficient number, since it is larger than the sum of its proper divisors (2529111).

245314261 is an equidigital number, since it uses as much as digits as its factorization.

245314261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529110.

The product of its digits is 5760, while the sum is 28.

The square root of 245314261 is about 15662.5113248163. The cubic root of 245314261 is about 625.9999021799. Note that the first 4 decimals are identical.

The spelling of 245314261 in words is "two hundred forty-five million, three hundred fourteen thousand, two hundred sixty-one".