553731091 has 2 divisors, whose sum is σ = 553731092. Its totient is φ = 553731090.

The previous prime is 553731067. The next prime is 553731109. The reversal of 553731091 is 190137355.

Together with next prime (553731109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 553731091 - 2⁷ = 553730963 is a prime.

It is a super-2 number, since 2×553731091² = 613236242280100562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (553731001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276865545 + 276865546.

It is an arithmetic number, because the mean of its divisors is an integer number (276865546).

Almost surely, 2^553731091 is an apocalyptic number.

553731091 is a deficient number, since it is larger than the sum of its proper divisors (1).

553731091 is an equidigital number, since it uses as much as digits as its factorization.

553731091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14175, while the sum is 34.

The square root of 553731091 is about 23531.4914741926. The cubic root of 553731091 is about 821.1698012340.

The spelling of 553731091 in words is "five hundred fifty-three million, seven hundred thirty-one thousand, ninety-one".