1155720235 has 8 divisors (see below), whose sum is σ = 1390795200. Its totient is φ = 921955584.

The previous prime is 1155720229. The next prime is 1155720253. The reversal of 1155720235 is 5320275511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1155720235 - 2¹³ = 1155712043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1155720197 and 1155720206.

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, 325635 + ... + 329164.

It is an arithmetic number, because the mean of its divisors is an integer number (173849400).

Almost surely, 2^1155720235 is an apocalyptic number.

1155720235 is a deficient number, since it is larger than the sum of its proper divisors (235074965).

1155720235 is an equidigital number, since it uses as much as digits as its factorization.

1155720235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655157.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 1155720235 is about 33995.8855598733. The cubic root of 1155720235 is about 1049.4237911834.

Adding to 1155720235 its reverse (5320275511), we get a palindrome (6475995746).

The spelling of 1155720235 in words is "one billion, one hundred fifty-five million, seven hundred twenty thousand, two hundred thirty-five".