1151526251 has 4 divisors (see below), whose sum is σ = 1151599152. Its totient is φ = 1151453352.

The previous prime is 1151526239. The next prime is 1151526269. The reversal of 1151526251 is 1526251511.

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.

It is a cyclic number.

It is not a de Polignac number, because 1151526251 - 2¹⁴ = 1151509867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151526221) 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, 1736 + ... + 48021.

It is an arithmetic number, because the mean of its divisors is an integer number (287899788).

Almost surely, 2^1151526251 is an apocalyptic number.

1151526251 is a deficient number, since it is larger than the sum of its proper divisors (72901).

1151526251 is an equidigital number, since it uses as much as digits as its factorization.

1151526251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72900.

The product of its digits is 3000, while the sum is 29.

The square root of 1151526251 is about 33934.1457974118. The cubic root of 1151526251 is about 1048.1528373307.

Adding to 1151526251 its reverse (1526251511), we get a palindrome (2677777762).

The spelling of 1151526251 in words is "one billion, one hundred fifty-one million, five hundred twenty-six thousand, two hundred fifty-one".