554530021 has 12 divisors (see below), whose sum is σ = 602780992. Its totient is φ = 509761728.

The previous prime is 554530019. The next prime is 554530049. The reversal of 554530021 is 120035455.

It is not a de Polignac number, because 554530021 - 2¹ = 554530019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554530001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9885 + ... + 34738.

Almost surely, 2^554530021 is an apocalyptic number.

It is an amenable number.

554530021 is a deficient number, since it is larger than the sum of its proper divisors (48250971).

554530021 is a wasteful number, since it uses less digits than its factorization.

554530021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44700 (or 44683 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 554530021 is about 23548.4611174488. The cubic root of 554530021 is about 821.5645427311.

Adding to 554530021 its reverse (120035455), we get a palindrome (674565476).

The spelling of 554530021 in words is "five hundred fifty-four million, five hundred thirty thousand, twenty-one".