245535261 has 4 divisors (see below), whose sum is σ = 327380352. Its totient is φ = 163690172.

The previous prime is 245535259. The next prime is 245535263. The reversal of 245535261 is 162535542.

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 an interprime number because it is at equal distance from previous prime (245535259) and next prime (245535263).

It is a cyclic number.

It is not a de Polignac number, because 245535261 - 2¹ = 245535259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245535263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40922541 + ... + 40922546.

It is an arithmetic number, because the mean of its divisors is an integer number (81845088).

Almost surely, 2^245535261 is an apocalyptic number.

It is an amenable number.

245535261 is a deficient number, since it is larger than the sum of its proper divisors (81845091).

245535261 is an equidigital number, since it uses as much as digits as its factorization.

245535261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81845090.

The product of its digits is 36000, while the sum is 33.

The square root of 245535261 is about 15669.5647993172. The cubic root of 245535261 is about 626.1878304506.

The spelling of 245535261 in words is "two hundred forty-five million, five hundred thirty-five thousand, two hundred sixty-one".