245202401 has 4 divisors (see below), whose sum is σ = 248561412. Its totient is φ = 241843392.

The previous prime is 245202389. The next prime is 245202421. The reversal of 245202401 is 104202542.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104202542 = 2 ⋅52101271.

It can be written as a sum of positive squares in 2 ways, for example, as 192654400 + 52548001 = 13880^2 + 7249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245202401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245202421) 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, 1679396 + ... + 1679541.

It is an arithmetic number, because the mean of its divisors is an integer number (62140353).

Almost surely, 2^245202401 is an apocalyptic number.

It is an amenable number.

245202401 is a deficient number, since it is larger than the sum of its proper divisors (3359011).

245202401 is an equidigital number, since it uses as much as digits as its factorization.

245202401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359010.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 245202401 is about 15658.9399705089. The cubic root of 245202401 is about 625.9047385385.

Adding to 245202401 its reverse (104202542), we get a palindrome (349404943).

The spelling of 245202401 in words is "two hundred forty-five million, two hundred two thousand, four hundred one".