245001311 has 4 divisors (see below), whose sum is σ = 245079792. Its totient is φ = 244922832.

The previous prime is 245001301. The next prime is 245001343. The reversal of 245001311 is 113100542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113100542 = 2 ⋅56550271.

It is a cyclic number.

It is not a de Polignac number, because 245001311 - 2¹⁸ = 244739167 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 245001311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245001301) 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, 34355 + ... + 40868.

It is an arithmetic number, because the mean of its divisors is an integer number (61269948).

Almost surely, 2^245001311 is an apocalyptic number.

245001311 is a deficient number, since it is larger than the sum of its proper divisors (78481).

245001311 is an equidigital number, since it uses as much as digits as its factorization.

245001311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78480.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 245001311 is about 15652.5177208013. The cubic root of 245001311 is about 625.7335906680.

Adding to 245001311 its reverse (113100542), we get a palindrome (358101853).

The spelling of 245001311 in words is "two hundred forty-five million, one thousand, three hundred eleven".