1155715530 has 32 divisors (see below), whose sum is σ = 2774628864. Its totient is φ = 308089536.

The previous prime is 1155715529. The next prime is 1155715559. The reversal of 1155715530 is 355175511.

It is a junction number, because it is equal to n+sod(n) for n = 1155715491 and 1155715500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148824 + ... + 156396.

It is an arithmetic number, because the mean of its divisors is an integer number (86707152).

Almost surely, 2^1155715530 is an apocalyptic number.

1155715530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155715530 is an abundant number, since it is smaller than the sum of its proper divisors (1618913334).

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

1155715530 is a wasteful number, since it uses less digits than its factorization.

1155715530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12670.

The product of its (nonzero) digits is 13125, while the sum is 33.

The square root of 1155715530 is about 33995.8163602523. The cubic root of 1155715530 is about 1049.4223670943.

The spelling of 1155715530 in words is "one billion, one hundred fifty-five million, seven hundred fifteen thousand, five hundred thirty".