654550553 has 4 divisors (see below), whose sum is σ = 658207440. Its totient is φ = 650893668.

The previous prime is 654550549. The next prime is 654550571. The reversal of 654550553 is 355055456.

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 not a de Polignac number, because 654550553 - 2² = 654550549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654550753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1828175 + ... + 1828532.

It is an arithmetic number, because the mean of its divisors is an integer number (164551860).

Almost surely, 2^654550553 is an apocalyptic number.

It is an amenable number.

654550553 is a deficient number, since it is larger than the sum of its proper divisors (3656887).

654550553 is a wasteful number, since it uses less digits than its factorization.

654550553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656886.

The product of its (nonzero) digits is 225000, while the sum is 38.

The square root of 654550553 is about 25584.1856036107. The cubic root of 654550553 is about 868.2558765016.

The spelling of 654550553 in words is "six hundred fifty-four million, five hundred fifty thousand, five hundred fifty-three".