424256553 has 18 divisors (see below), whose sum is σ = 712867194. Its totient is φ = 242432064.

The previous prime is 424256537. The next prime is 424256557. The reversal of 424256553 is 355652424.

424256553 is a `hidden beast` number, since 4 + 2 + 42 + 565 + 53 = 666.

It can be written as a sum of positive squares in only one way, i.e., 400520169 + 23736384 = 20013^2 + 4872^2 .

It is not a de Polignac number, because 424256553 - 2⁴ = 424256537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (424256557) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 480576 + ... + 481457.

It is an arithmetic number, because the mean of its divisors is an integer number (39603733).

Almost surely, 2^424256553 is an apocalyptic number.

It is an amenable number.

424256553 is a deficient number, since it is larger than the sum of its proper divisors (288610641).

424256553 is a wasteful number, since it uses less digits than its factorization.

424256553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962053 (or 962043 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 424256553 is about 20597.4889974482. The cubic root of 424256553 is about 751.4086433090.

The spelling of 424256553 in words is "four hundred twenty-four million, two hundred fifty-six thousand, five hundred fifty-three".