1154921533 has 2 divisors, whose sum is σ = 1154921534. Its totient is φ = 1154921532.

The previous prime is 1154921489. The next prime is 1154921543. The reversal of 1154921533 is 3351294511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 890306244 + 264615289 = 29838^2 + 16267^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1154921533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1154921543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577460766 + 577460767.

It is an arithmetic number, because the mean of its divisors is an integer number (577460767).

Almost surely, 2^1154921533 is an apocalyptic number.

It is an amenable number.

1154921533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154921533 is an equidigital number, since it uses as much as digits as its factorization.

1154921533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 34.

The square root of 1154921533 is about 33984.1364904274. The cubic root of 1154921533 is about 1049.1819881317.

The spelling of 1154921533 in words is "one billion, one hundred fifty-four million, nine hundred twenty-one thousand, five hundred thirty-three".