1151251471 has 4 divisors (see below), whose sum is σ = 1156279000. Its totient is φ = 1146223944.

The previous prime is 1151251463. The next prime is 1151251481. The reversal of 1151251471 is 1741521511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1151251471 - 2³ = 1151251463 is a prime.

It is a super-3 number, since 3×1151251471³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151251421) 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, 2513421 + ... + 2513878.

It is an arithmetic number, because the mean of its divisors is an integer number (289069750).

Almost surely, 2^1151251471 is an apocalyptic number.

1151251471 is a deficient number, since it is larger than the sum of its proper divisors (5027529).

1151251471 is an equidigital number, since it uses as much as digits as its factorization.

1151251471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027528.

The product of its digits is 1400, while the sum is 28.

The square root of 1151251471 is about 33930.0968315742. The cubic root of 1151251471 is about 1048.0694597704.

Adding to 1151251471 its reverse (1741521511), we get a palindrome (2892772982).

The spelling of 1151251471 in words is "one billion, one hundred fifty-one million, two hundred fifty-one thousand, four hundred seventy-one".