1245115453 has 16 divisors (see below), whose sum is σ = 1299271680. Its totient is φ = 1192159296.

The previous prime is 1245115447. The next prime is 1245115483. The reversal of 1245115453 is 3545115421.

It is a cyclic number.

It is not a de Polignac number, because 1245115453 - 2¹³ = 1245107261 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 (1245115483) 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 15 ways as a sum of consecutive naturals, for example, 972868 + ... + 974146.

It is an arithmetic number, because the mean of its divisors is an integer number (81204480).

Almost surely, 2^1245115453 is an apocalyptic number.

It is an amenable number.

1245115453 is a deficient number, since it is larger than the sum of its proper divisors (54156227).

1245115453 is a wasteful number, since it uses less digits than its factorization.

1245115453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716.

The product of its digits is 12000, while the sum is 31.

The square root of 1245115453 is about 35286.1935181453. The cubic root of 1245115453 is about 1075.8123884030.

The spelling of 1245115453 in words is "one billion, two hundred forty-five million, one hundred fifteen thousand, four hundred fifty-three".