1151656550 has 48 divisors (see below), whose sum is σ = 2340064512. Its totient is φ = 418202400.

The previous prime is 1151656543. The next prime is 1151656559. The reversal of 1151656550 is 556561511.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1151656550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151656559) 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, 715847 + ... + 717453.

It is an arithmetic number, because the mean of its divisors is an integer number (48751344).

Almost surely, 2^1151656550 is an apocalyptic number.

1151656550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1151656550 is an abundant number, since it is smaller than the sum of its proper divisors (1188407962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1151656550 is a wasteful number, since it uses less digits than its factorization.

1151656550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933 (or 2928 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 35.

The square root of 1151656550 is about 33936.0656234632. The cubic root of 1151656550 is about 1048.1923698252.

The spelling of 1151656550 in words is "one billion, one hundred fifty-one million, six hundred fifty-six thousand, five hundred fifty".