1155535201 has 4 divisors (see below), whose sum is σ = 1163187904. Its totient is φ = 1147882500.

The previous prime is 1155535193. The next prime is 1155535219. The reversal of 1155535201 is 1025355511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1155535201 - 2³ = 1155535193 is a prime.

It is a super-2 number, since 2×1155535201² = 2670523201500220802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1155535201.

It is not an unprimeable number, because it can be changed into a prime (1155539201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3826125 + ... + 3826426.

It is an arithmetic number, because the mean of its divisors is an integer number (290796976).

Almost surely, 2^1155535201 is an apocalyptic number.

It is an amenable number.

1155535201 is a deficient number, since it is larger than the sum of its proper divisors (7652703).

1155535201 is an equidigital number, since it uses as much as digits as its factorization.

1155535201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7652702.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 1155535201 is about 33993.1640333759. The cubic root of 1155535201 is about 1049.3677829789.

The spelling of 1155535201 in words is "one billion, one hundred fifty-five million, five hundred thirty-five thousand, two hundred one".