555275421 has 6 divisors (see below), whose sum is σ = 802064510. Its totient is φ = 370183608.

The previous prime is 555275417. The next prime is 555275443. The reversal of 555275421 is 124572555.

It can be written as a sum of positive squares in only one way, i.e., 306740196 + 248535225 = 17514^2 + 15765^2 .

It is not a de Polignac number, because 555275421 - 2² = 555275417 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 (555275401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30848626 + ... + 30848643.

Almost surely, 2^555275421 is an apocalyptic number.

It is an amenable number.

555275421 is a deficient number, since it is larger than the sum of its proper divisors (246789089).

555275421 is a wasteful number, since it uses less digits than its factorization.

555275421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61697275 (or 61697272 counting only the distinct ones).

The product of its digits is 70000, while the sum is 36.

The square root of 555275421 is about 23564.2827389250. The cubic root of 555275421 is about 821.9324939679.

The spelling of 555275421 in words is "five hundred fifty-five million, two hundred seventy-five thousand, four hundred twenty-one".