553666247 has 4 divisors (see below), whose sum is σ = 554029416. Its totient is φ = 553303080.

The previous prime is 553666229. The next prime is 553666271. The reversal of 553666247 is 742666355.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 553666247 - 2⁸ = 553665991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 553666198 and 553666207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553666297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179288 + ... + 182349.

It is an arithmetic number, because the mean of its divisors is an integer number (138507354).

Almost surely, 2^553666247 is an apocalyptic number.

553666247 is a deficient number, since it is larger than the sum of its proper divisors (363169).

553666247 is a wasteful number, since it uses less digits than its factorization.

553666247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363168.

The product of its digits is 907200, while the sum is 44.

The square root of 553666247 is about 23530.1136206352. The cubic root of 553666247 is about 821.1377459554.

The spelling of 553666247 in words is "five hundred fifty-three million, six hundred sixty-six thousand, two hundred forty-seven".