554045021 has 4 divisors (see below), whose sum is σ = 561848544. Its totient is φ = 546241500.

The previous prime is 554045017. The next prime is 554045039. The reversal of 554045021 is 120540455.

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 554045021 - 2² = 554045017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554045081) 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, 3901655 + ... + 3901796.

It is an arithmetic number, because the mean of its divisors is an integer number (140462136).

Almost surely, 2^554045021 is an apocalyptic number.

It is an amenable number.

554045021 is a deficient number, since it is larger than the sum of its proper divisors (7803523).

554045021 is an equidigital number, since it uses as much as digits as its factorization.

554045021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7803522.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 554045021 is about 23538.1609519520. The cubic root of 554045021 is about 821.3249554466.

Adding to 554045021 its reverse (120540455), we get a palindrome (674585476).

The spelling of 554045021 in words is "five hundred fifty-four million, forty-five thousand, twenty-one".