249631201 has 4 divisors (see below), whose sum is σ = 249677572. Its totient is φ = 249584832.

The previous prime is 249631199. The next prime is 249631229. The reversal of 249631201 is 102136942.

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 161290000 + 88341201 = 12700^2 + 9399^2 .

It is a cyclic number.

It is not a de Polignac number, because 249631201 - 2¹ = 249631199 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 249631201.

It is not an unprimeable number, because it can be changed into a prime (249631271) 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 3 ways as a sum of consecutive naturals, for example, 13860 + ... + 26293.

It is an arithmetic number, because the mean of its divisors is an integer number (62419393).

Almost surely, 2^249631201 is an apocalyptic number.

It is an amenable number.

249631201 is a deficient number, since it is larger than the sum of its proper divisors (46371).

249631201 is an equidigital number, since it uses as much as digits as its factorization.

249631201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46370.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 249631201 is about 15799.7215481793. The cubic root of 249631201 is about 629.6506007489.

The spelling of 249631201 in words is "two hundred forty-nine million, six hundred thirty-one thousand, two hundred one".