1152555651 has 24 divisors (see below), whose sum is σ = 1794019136. Its totient is φ = 708808320.

The previous prime is 1152555643. The next prime is 1152555673. The reversal of 1152555651 is 1565552511.

1152555651 is a `hidden beast` number, since 1 + 1 + 52 + 5 + 556 + 51 = 666.

It is not a de Polignac number, because 1152555651 - 2³ = 1152555643 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1152555631) 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 23 ways as a sum of consecutive naturals, for example, 315606 + ... + 319236.

Almost surely, 2^1152555651 is an apocalyptic number.

1152555651 is a deficient number, since it is larger than the sum of its proper divisors (641463485).

1152555651 is a wasteful number, since it uses less digits than its factorization.

1152555651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6363 (or 6360 counting only the distinct ones).

The product of its digits is 37500, while the sum is 36.

The square root of 1152555651 is about 33949.3100224438. The cubic root of 1152555651 is about 1048.4650742936.

It can be divided in two parts, 11525 and 55651, that added together give a palindrome (67176).

The spelling of 1152555651 in words is "one billion, one hundred fifty-two million, five hundred fifty-five thousand, six hundred fifty-one".