1155651043 has 2 divisors, whose sum is σ = 1155651044. Its totient is φ = 1155651042.

The previous prime is 1155651001. The next prime is 1155651097. The reversal of 1155651043 is 3401565511.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155651043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1155650996 and 1155651014.

It is not a weakly prime, because it can be changed into another prime (1155657043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577825521 + 577825522.

It is an arithmetic number, because the mean of its divisors is an integer number (577825522).

Almost surely, 2^1155651043 is an apocalyptic number.

1155651043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155651043 is an equidigital number, since it uses as much as digits as its factorization.

1155651043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 1155651043 is about 33994.8678920804. The cubic root of 1155651043 is about 1049.4028480584.

The spelling of 1155651043 in words is "one billion, one hundred fifty-five million, six hundred fifty-one thousand, forty-three".