555234421 has 16 divisors (see below), whose sum is σ = 669600000. Its totient is φ = 450096768.

The previous prime is 555234409. The next prime is 555234443. The reversal of 555234421 is 124432555.

It is a cyclic number.

It is not a de Polignac number, because 555234421 - 2¹³ = 555226229 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 (555234721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5046 + ... + 33703.

It is an arithmetic number, because the mean of its divisors is an integer number (41850000).

Almost surely, 2^555234421 is an apocalyptic number.

It is an amenable number.

555234421 is a deficient number, since it is larger than the sum of its proper divisors (114365579).

555234421 is a wasteful number, since it uses less digits than its factorization.

555234421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38868.

The product of its digits is 24000, while the sum is 31.

The square root of 555234421 is about 23563.4127621616. The cubic root of 555234421 is about 821.9122637299.

Adding to 555234421 its reverse (124432555), we get a palindrome (679666976).

The spelling of 555234421 in words is "five hundred fifty-five million, two hundred thirty-four thousand, four hundred twenty-one".