554955721 has 8 divisors (see below), whose sum is σ = 573720224. Its totient is φ = 536457600.

The previous prime is 554955683. The next prime is 554955757. The reversal of 554955721 is 127559455.

554955721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 554955721 - 2¹⁷ = 554824649 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (554952721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62355 + ... + 70696.

It is an arithmetic number, because the mean of its divisors is an integer number (71715028).

Almost surely, 2^554955721 is an apocalyptic number.

It is an amenable number.

554955721 is a deficient number, since it is larger than the sum of its proper divisors (18764503).

554955721 is a wasteful number, since it uses less digits than its factorization.

554955721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133191.

The product of its digits is 315000, while the sum is 43.

The square root of 554955721 is about 23557.4981905974. The cubic root of 554955721 is about 821.7747210533.

It can be divided in two parts, 55495 and 5721, that added together give a palindrome (61216).

The spelling of 554955721 in words is "five hundred fifty-four million, nine hundred fifty-five thousand, seven hundred twenty-one".