553647997 has 4 divisors (see below), whose sum is σ = 632740576. Its totient is φ = 474555420.

The previous prime is 553647979. The next prime is 553648013. The reversal of 553647997 is 799746355.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-553647997 is a prime.

It is a super-2 number, since 2×553647997² = 613052209164224018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553647937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39546279 + ... + 39546292.

It is an arithmetic number, because the mean of its divisors is an integer number (158185144).

Almost surely, 2^553647997 is an apocalyptic number.

It is an amenable number.

553647997 is a deficient number, since it is larger than the sum of its proper divisors (79092579).

553647997 is an equidigital number, since it uses as much as digits as its factorization.

553647997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79092578.

The product of its digits is 7144200, while the sum is 55.

The square root of 553647997 is about 23529.7258165071. The cubic root of 553647997 is about 821.1287237158.

The spelling of 553647997 in words is "five hundred fifty-three million, six hundred forty-seven thousand, nine hundred ninety-seven".