245512001 has 6 divisors (see below), whose sum is σ = 285595650. Its totient is φ = 210438816.

The previous prime is 245511997. The next prime is 245512027. The reversal of 245512001 is 100215542.

It can be written as a sum of positive squares in only one way, i.e., 157527601 + 87984400 = 12551^2 + 9380^2 .

It is not a de Polignac number, because 245512001 - 2² = 245511997 is a prime.

It is a super-2 number, since 2×245512001² = 120552285270048002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245512061) 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 5 ways as a sum of consecutive naturals, for example, 2505176 + ... + 2505273.

It is an arithmetic number, because the mean of its divisors is an integer number (47599275).

Almost surely, 2^245512001 is an apocalyptic number.

It is an amenable number.

245512001 is a deficient number, since it is larger than the sum of its proper divisors (40083649).

245512001 is an equidigital number, since it uses as much as digits as its factorization.

245512001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5010463 (or 5010456 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 245512001 is about 15668.8225786113. The cubic root of 245512001 is about 626.1680565238.

Adding to 245512001 its reverse (100215542), we get a palindrome (345727543).

The spelling of 245512001 in words is "two hundred forty-five million, five hundred twelve thousand, one".