1123532451 has 20 divisors (see below), whose sum is σ = 1751338512. Its totient is φ = 716454288.

The previous prime is 1123532437. The next prime is 1123532483. The reversal of 1123532451 is 1542353211.

1123532451 is a `hidden beast` number, since 1 + 123 + 532 + 4 + 5 + 1 = 666.

It is not a de Polignac number, because 1123532451 - 2⁵ = 1123532419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1123532401) 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 19 ways as a sum of consecutive naturals, for example, 299676 + ... + 303401.

Almost surely, 2^1123532451 is an apocalyptic number.

1123532451 is a deficient number, since it is larger than the sum of its proper divisors (627806061).

1123532451 is an equidigital number, since it uses as much as digits as its factorization.

1123532451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603112 (or 603103 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1123532451 is about 33519.1355944631. The cubic root of 1123532451 is about 1039.5894740048.

Adding to 1123532451 its reverse (1542353211), we get a palindrome (2665885662).

The spelling of 1123532451 in words is "one billion, one hundred twenty-three million, five hundred thirty-two thousand, four hundred fifty-one".