245067261 has 4 divisors (see below), whose sum is σ = 326756352. Its totient is φ = 163378172.

The previous prime is 245067247. The next prime is 245067269. The reversal of 245067261 is 162760542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 245067261 - 2²⁷ = 110849533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245067269) 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, 40844541 + ... + 40844546.

It is an arithmetic number, because the mean of its divisors is an integer number (81689088).

Almost surely, 2^245067261 is an apocalyptic number.

It is an amenable number.

245067261 is a deficient number, since it is larger than the sum of its proper divisors (81689091).

245067261 is an equidigital number, since it uses as much as digits as its factorization.

245067261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81689090.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 245067261 is about 15654.6242688862. The cubic root of 245067261 is about 625.7897310861.

The spelling of 245067261 in words is "two hundred forty-five million, sixty-seven thousand, two hundred sixty-one".