1151155553 has 2 divisors, whose sum is σ = 1151155554. Its totient is φ = 1151155552.

The previous prime is 1151155487. The next prime is 1151155567. The reversal of 1151155553 is 3555511511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 739187344 + 411968209 = 27188^2 + 20297^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151155553 - 2²⁰ = 1150106977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1151155853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575577776 + 575577777.

It is an arithmetic number, because the mean of its divisors is an integer number (575577777).

Almost surely, 2^1151155553 is an apocalyptic number.

It is an amenable number.

1151155553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151155553 is an equidigital number, since it uses as much as digits as its factorization.

1151155553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9375, while the sum is 32.

The square root of 1151155553 is about 33928.6833372591. The cubic root of 1151155553 is about 1048.0403518761.

The spelling of 1151155553 in words is "one billion, one hundred fifty-one million, one hundred fifty-five thousand, five hundred fifty-three".