1045253213 has 4 divisors (see below), whose sum is σ = 1100266560. Its totient is φ = 990239868.

The previous prime is 1045253197. The next prime is 1045253243. The reversal of 1045253213 is 3123525401.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 1045253213 - 2⁴ = 1045253197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045253243) 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, 27506645 + ... + 27506682.

It is an arithmetic number, because the mean of its divisors is an integer number (275066640).

Almost surely, 2^1045253213 is an apocalyptic number.

It is an amenable number.

1045253213 is a deficient number, since it is larger than the sum of its proper divisors (55013347).

1045253213 is an equidigital number, since it uses as much as digits as its factorization.

1045253213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55013346.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1045253213 is about 32330.3760108045. The cubic root of 1045253213 is about 1014.8624185218.

Adding to 1045253213 its reverse (3123525401), we get a palindrome (4168778614).

The spelling of 1045253213 in words is "one billion, forty-five million, two hundred fifty-three thousand, two hundred thirteen".