1156521064 has 16 divisors (see below), whose sum is σ = 2170850400. Its totient is φ = 577627632.

The previous prime is 1156521049. The next prime is 1156521083. The reversal of 1156521064 is 4601256511.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71302 + ... + 86005.

It is an arithmetic number, because the mean of its divisors is an integer number (135678150).

Almost surely, 2^1156521064 is an apocalyptic number.

It is an amenable number.

1156521064 is a deficient number, since it is larger than the sum of its proper divisors (1014329336).

1156521064 is a wasteful number, since it uses less digits than its factorization.

1156521064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158232 (or 158228 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1156521064 is about 34007.6618425907. The cubic root of 1156521064 is about 1049.6661263497. Note that the first 3 decimals are identical.

Adding to 1156521064 its reverse (4601256511), we get a palindrome (5757777575).

The spelling of 1156521064 in words is "one billion, one hundred fifty-six million, five hundred twenty-one thousand, sixty-four".