554957521 has 4 divisors (see below), whose sum is σ = 555291700. Its totient is φ = 554623344.

The previous prime is 554957519. The next prime is 554957587. The reversal of 554957521 is 125759455.

554957521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 261177921 + 293779600 = 16161^2 + 17140^2 .

It is a cyclic number.

It is not a de Polignac number, because 554957521 - 2¹ = 554957519 is a prime.

It is a super-2 number, since 2×554957521² = 615955700228930882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (554957621) 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, 164586 + ... + 167923.

It is an arithmetic number, because the mean of its divisors is an integer number (138822925).

Almost surely, 2^554957521 is an apocalyptic number.

It is an amenable number.

554957521 is a deficient number, since it is larger than the sum of its proper divisors (334179).

554957521 is a wasteful number, since it uses less digits than its factorization.

554957521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334178.

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

The square root of 554957521 is about 23557.5363949629. The cubic root of 554957521 is about 821.7756095283.

The spelling of 554957521 in words is "five hundred fifty-four million, nine hundred fifty-seven thousand, five hundred twenty-one".