1151451451 has 4 divisors (see below), whose sum is σ = 1151520304. Its totient is φ = 1151382600.

The previous prime is 1151451443. The next prime is 1151451479. The reversal of 1151451451 is 1541541511.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1541541511 = 73 ⋅21117007.

It is a cyclic number.

It is not a de Polignac number, because 1151451451 - 2³ = 1151451443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151451551) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8506 + ... + 48736.

It is an arithmetic number, because the mean of its divisors is an integer number (287880076).

Almost surely, 2^1151451451 is an apocalyptic number.

1151451451 is a deficient number, since it is larger than the sum of its proper divisors (68853).

1151451451 is an equidigital number, since it uses as much as digits as its factorization.

1151451451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68852.

The product of its digits is 2000, while the sum is 28.

The square root of 1151451451 is about 33933.0436448014. The cubic root of 1151451451 is about 1048.1301417908.

Adding to 1151451451 its reverse (1541541511), we get a palindrome (2692992962).

The spelling of 1151451451 in words is "one billion, one hundred fifty-one million, four hundred fifty-one thousand, four hundred fifty-one".