1253343445 has 16 divisors (see below), whose sum is σ = 1594382400. Its totient is φ = 942568704.

The previous prime is 1253343437. The next prime is 1253343463. The reversal of 1253343445 is 5443433521.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1253343445 - 2³ = 1253343437 is a prime.

It is a super-2 number, since 2×1253343445² = 3141739582248936050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1253343445.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 66706 + ... + 83404.

It is an arithmetic number, because the mean of its divisors is an integer number (99648900).

Almost surely, 2^1253343445 is an apocalyptic number.

It is an amenable number.

1253343445 is a deficient number, since it is larger than the sum of its proper divisors (341038955).

1253343445 is a wasteful number, since it uses less digits than its factorization.

1253343445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17604.

The product of its digits is 86400, while the sum is 34.

The square root of 1253343445 is about 35402.5909362578. The cubic root of 1253343445 is about 1078.1769211654.

Adding to 1253343445 its reverse (5443433521), we get a palindrome (6696776966).

The spelling of 1253343445 in words is "one billion, two hundred fifty-three million, three hundred forty-three thousand, four hundred forty-five".