1151055020 has 24 divisors (see below), whose sum is σ = 2430577968. Its totient is φ = 457876800.

The previous prime is 1151055011. The next prime is 1151055041. The reversal of 1151055020 is 205501511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1151054983 and 1151055001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155366 + ... + 162605.

It is an arithmetic number, because the mean of its divisors is an integer number (101274082).

Almost surely, 2^1151055020 is an apocalyptic number.

1151055020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151055020 is an abundant number, since it is smaller than the sum of its proper divisors (1279522948).

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

1151055020 is a wasteful number, since it uses less digits than its factorization.

1151055020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318161 (or 318159 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 1151055020 is about 33927.2017708505. The cubic root of 1151055020 is about 1048.0098417486.

Adding to 1151055020 its reverse (205501511), we get a palindrome (1356556531).

The spelling of 1151055020 in words is "one billion, one hundred fifty-one million, fifty-five thousand, twenty".