1156455211 has 2 divisors, whose sum is σ = 1156455212. Its totient is φ = 1156455210.

The previous prime is 1156455199. The next prime is 1156455241. The reversal of 1156455211 is 1125546511.

It is a weak prime.

It is an emirp because it is prime and its reverse (1125546511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1156455211 - 2²¹ = 1154358059 is a prime.

It is not a weakly prime, because it can be changed into another prime (1156455241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578227605 + 578227606.

It is an arithmetic number, because the mean of its divisors is an integer number (578227606).

Almost surely, 2^1156455211 is an apocalyptic number.

1156455211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156455211 is an equidigital number, since it uses as much as digits as its factorization.

1156455211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6000, while the sum is 31.

The square root of 1156455211 is about 34006.6936205212. The cubic root of 1156455211 is about 1049.6462030995.

The spelling of 1156455211 in words is "one billion, one hundred fifty-six million, four hundred fifty-five thousand, two hundred eleven".