201400245 has 24 divisors (see below), whose sum is σ = 349995672. Its totient is φ = 107136000.

The previous prime is 201400237. The next prime is 201400249. The reversal of 201400245 is 542004102.

201400245 is a `hidden beast` number, since 20 + 1 + 400 + 245 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 23097636 + 178302609 = 4806^2 + 13353^2 .

It is not a de Polignac number, because 201400245 - 2³ = 201400237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201400249) 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 23 ways as a sum of consecutive naturals, for example, 12465 + ... + 23625.

It is an arithmetic number, because the mean of its divisors is an integer number (14583153).

Almost surely, 2^201400245 is an apocalyptic number.

It is an amenable number.

201400245 is a deficient number, since it is larger than the sum of its proper divisors (148595427).

201400245 is a wasteful number, since it uses less digits than its factorization.

201400245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11573 (or 11570 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 201400245 is about 14191.5554115819. Note that the first 3 decimals coincide. The cubic root of 201400245 is about 586.1651553345.

Adding to 201400245 its reverse (542004102), we get a palindrome (743404347).

The spelling of 201400245 in words is "two hundred one million, four hundred thousand, two hundred forty-five".