1001332253 has 4 divisors (see below), whose sum is σ = 1001867040. Its totient is φ = 1000797468.

The previous prime is 1001332201. The next prime is 1001332327. The reversal of 1001332253 is 3522331001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3522331001 = 7 ⋅503190143.

It is a cyclic number.

It is not a de Polignac number, because 1001332253 - 2⁸ = 1001331997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001338253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264575 + ... + 268332.

It is an arithmetic number, because the mean of its divisors is an integer number (250466760).

Almost surely, 2^1001332253 is an apocalyptic number.

It is an amenable number.

1001332253 is a deficient number, since it is larger than the sum of its proper divisors (534787).

1001332253 is an equidigital number, since it uses as much as digits as its factorization.

1001332253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534786.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 1001332253 is about 31643.8343599508. The cubic root of 1001332253 is about 1000.4438872683.

Adding to 1001332253 its reverse (3522331001), we get a palindrome (4523663254).

The spelling of 1001332253 in words is "one billion, one million, three hundred thirty-two thousand, two hundred fifty-three".