1156552650 has 144 divisors (see below), whose sum is σ = 3499561728. Its totient is φ = 271296000.

The previous prime is 1156552643. The next prime is 1156552669. The reversal of 1156552650 is 562556511.

1156552650 is a `hidden beast` number, since 1 + 1 + 56 + 552 + 6 + 50 = 666.

It is a super-2 number, since 2×1156552650² = 2675228064444045000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 149682 + ... + 157218.

It is an arithmetic number, because the mean of its divisors is an integer number (24302512).

Almost surely, 2^1156552650 is an apocalyptic number.

1156552650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1156552650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1749780864).

1156552650 is an abundant number, since it is smaller than the sum of its proper divisors (2343009078).

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

1156552650 is a wasteful number, since it uses less digits than its factorization.

1156552650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7597 (or 7589 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The square root of 1156552650 is about 34008.1262347692. The cubic root of 1156552650 is about 1049.6756821498.

The spelling of 1156552650 in words is "one billion, one hundred fifty-six million, five hundred fifty-two thousand, six hundred fifty".