1253443201 has 8 divisors (see below), whose sum is σ = 1327609224. Its totient is φ = 1179325440.

The previous prime is 1253443199. The next prime is 1253443223. The reversal of 1253443201 is 1023443521.

It can be written as a sum of positive squares in 4 ways, for example, as 309724801 + 943718400 = 17599^2 + 30720^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1253443201 - 2¹ = 1253443199 is a prime.

It is a super-2 number, since 2×1253443201² = 3142239716266252802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253443241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50821 + ... + 71341.

It is an arithmetic number, because the mean of its divisors is an integer number (165951153).

Almost surely, 2^1253443201 is an apocalyptic number.

It is an amenable number.

1253443201 is a deficient number, since it is larger than the sum of its proper divisors (74166023).

1253443201 is a wasteful number, since it uses less digits than its factorization.

1253443201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24131.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1253443201 is about 35403.9997881595. Note that the first 3 decimals coincide. The cubic root of 1253443201 is about 1078.2055251271.

Adding to 1253443201 its reverse (1023443521), we get a palindrome (2276886722).

The spelling of 1253443201 in words is "one billion, two hundred fifty-three million, four hundred forty-three thousand, two hundred one".