1115152451 has 24 divisors (see below), whose sum is σ = 1376931840. Its totient is φ = 884276352.

The previous prime is 1115152439. The next prime is 1115152471. The reversal of 1115152451 is 1542515111.

It is a happy number.

It is not a de Polignac number, because 1115152451 - 2²⁶ = 1048043587 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1115152451.

It is not an unprimeable number, because it can be changed into a prime (1115152421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114686 + ... + 124028.

It is an arithmetic number, because the mean of its divisors is an integer number (57372160).

Almost surely, 2^1115152451 is an apocalyptic number.

1115152451 is a deficient number, since it is larger than the sum of its proper divisors (261779389).

1115152451 is an equidigital number, since it uses as much as digits as its factorization.

1115152451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9443 (or 9426 counting only the distinct ones).

The product of its digits is 1000, while the sum is 26.

The square root of 1115152451 is about 33393.8984097395. The cubic root of 1115152451 is about 1036.9983875277.

Adding to 1115152451 its reverse (1542515111), we get a palindrome (2657667562).

The spelling of 1115152451 in words is "one billion, one hundred fifteen million, one hundred fifty-two thousand, four hundred fifty-one".