553721867 has 4 divisors (see below), whose sum is σ = 555168000. Its totient is φ = 552275736.

The previous prime is 553721843. The next prime is 553721873. The reversal of 553721867 is 768127355.

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 553721867 - 2⁸ = 553721611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (553721767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722492 + ... + 723257.

It is an arithmetic number, because the mean of its divisors is an integer number (138792000).

Almost surely, 2^553721867 is an apocalyptic number.

553721867 is a deficient number, since it is larger than the sum of its proper divisors (1446133).

553721867 is a wasteful number, since it uses less digits than its factorization.

553721867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446132.

The product of its digits is 352800, while the sum is 44.

The square root of 553721867 is about 23531.2954806997. The cubic root of 553721867 is about 821.1652415525.

The spelling of 553721867 in words is "five hundred fifty-three million, seven hundred twenty-one thousand, eight hundred sixty-seven".