245140001 has 4 divisors (see below), whose sum is σ = 245339412. Its totient is φ = 244940592.

The previous prime is 245139967. The next prime is 245140013. The reversal of 245140001 is 100041542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 211731601 + 33408400 = 14551^2 + 5780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245140001 is a prime.

It is a super-4 number, since 4×245140001⁴ (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245140031) 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, 97850 + ... + 100323.

It is an arithmetic number, because the mean of its divisors is an integer number (61334853).

Almost surely, 2^245140001 is an apocalyptic number.

It is an amenable number.

245140001 is a deficient number, since it is larger than the sum of its proper divisors (199411).

245140001 is a wasteful number, since it uses less digits than its factorization.

245140001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199410.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 245140001 is about 15656.9473716941. The cubic root of 245140001 is about 625.8516398615.

Adding to 245140001 its reverse (100041542), we get a palindrome (345181543).

The spelling of 245140001 in words is "two hundred forty-five million, one hundred forty thousand, one".