249872201 has 4 divisors (see below), whose sum is σ = 250142100. Its totient is φ = 249602304.

The previous prime is 249872179. The next prime is 249872219. The reversal of 249872201 is 102278942.

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 10086976 + 239785225 = 3176^2 + 15485^2 .

It is a cyclic number.

It is not a de Polignac number, because 249872201 - 2¹⁰ = 249871177 is a prime.

It is a super-2 number, since 2×249872201² = 124872233665168802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249872281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133556 + ... + 135413.

It is an arithmetic number, because the mean of its divisors is an integer number (62535525).

Almost surely, 2^249872201 is an apocalyptic number.

It is an amenable number.

249872201 is a deficient number, since it is larger than the sum of its proper divisors (269899).

249872201 is an equidigital number, since it uses as much as digits as its factorization.

249872201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269898.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 249872201 is about 15807.3464250013. The cubic root of 249872201 is about 629.8531622174.

The spelling of 249872201 in words is "two hundred forty-nine million, eight hundred seventy-two thousand, two hundred one".