553503491 has 2 divisors, whose sum is σ = 553503492. Its totient is φ = 553503490.

The previous prime is 553503479. The next prime is 553503523. The reversal of 553503491 is 194305355.

553503491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-553503491 is a prime.

It is a super-2 number, since 2×553503491² = 612732229098374162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (553503451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276751745 + 276751746.

It is an arithmetic number, because the mean of its divisors is an integer number (276751746).

Almost surely, 2^553503491 is an apocalyptic number.

553503491 is a deficient number, since it is larger than the sum of its proper divisors (1).

553503491 is an equidigital number, since it uses as much as digits as its factorization.

553503491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40500, while the sum is 35.

The square root of 553503491 is about 23526.6549045970. The cubic root of 553503491 is about 821.0572773859.

The spelling of 553503491 in words is "five hundred fifty-three million, five hundred three thousand, four hundred ninety-one".