1151000550 has 192 divisors, whose sum is σ = 3742617600. Its totient is φ = 254534400.

The previous prime is 1151000537. The next prime is 1151000579. The reversal of 1151000550 is 550001511.

1151000550 is a `hidden beast` number, since 1 + 15 + 100 + 0 + 550 = 666.

It is a super-2 number, since 2×1151000550² = 2649604532200605000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 290986 + ... + 294914.

It is an arithmetic number, because the mean of its divisors is an integer number (19492800).

Almost surely, 2^1151000550 is an apocalyptic number.

1151000550 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 1151000550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1871308800).

1151000550 is an abundant number, since it is smaller than the sum of its proper divisors (2591617050).

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

1151000550 is a wasteful number, since it uses less digits than its factorization.

1151000550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3988 (or 3977 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The square root of 1151000550 is about 33926.3990131579. The cubic root of 1151000550 is about 1047.9933102490.

The spelling of 1151000550 in words is "one billion, one hundred fifty-one million, five hundred fifty", and thus it is an aban number.