1161552043 has 4 divisors (see below), whose sum is σ = 1162207480. Its totient is φ = 1160896608.

The previous prime is 1161551987. The next prime is 1161552053. The reversal of 1161552043 is 3402551611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161552043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161552053) 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, 325053 + ... + 328606.

It is an arithmetic number, because the mean of its divisors is an integer number (290551870).

Almost surely, 2^1161552043 is an apocalyptic number.

1161552043 is a deficient number, since it is larger than the sum of its proper divisors (655437).

1161552043 is an equidigital number, since it uses as much as digits as its factorization.

1161552043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655436.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1161552043 is about 34081.5498914002. The cubic root of 1161552043 is about 1051.1859745260.

The spelling of 1161552043 in words is "one billion, one hundred sixty-one million, five hundred fifty-two thousand, forty-three".