1145263451 has 4 divisors (see below), whose sum is σ = 1146289872. Its totient is φ = 1144237032.

The previous prime is 1145263421. The next prime is 1145263487. The reversal of 1145263451 is 1543625411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1543625411 = 7883 ⋅195817.

It is a cyclic number.

It is not a de Polignac number, because 1145263451 - 2⁶ = 1145263387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145263421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511535 + ... + 513768.

It is an arithmetic number, because the mean of its divisors is an integer number (286572468).

Almost surely, 2^1145263451 is an apocalyptic number.

1145263451 is a deficient number, since it is larger than the sum of its proper divisors (1026421).

1145263451 is a wasteful number, since it uses less digits than its factorization.

1145263451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026420.

The product of its digits is 14400, while the sum is 32.

The square root of 1145263451 is about 33841.7412524829. The cubic root of 1145263451 is about 1046.2491875122.

Adding to 1145263451 its reverse (1543625411), we get a palindrome (2688888862).

The spelling of 1145263451 in words is "one billion, one hundred forty-five million, two hundred sixty-three thousand, four hundred fifty-one".