551425 has 24 divisors (see below), whose sum is σ = 821376. Its totient is φ = 359040.

The previous prime is 551423. The next prime is 551443. The reversal of 551425 is 524155.

It is not a de Polignac number, because 551425 - 2¹ = 551423 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 551396 and 551405.

It is not an unprimeable number, because it can be changed into a prime (551423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3957 + ... + 4093.

It is an arithmetic number, because the mean of its divisors is an integer number (34224).

2⁵⁵¹⁴²⁵ is an apocalyptic number.

It is an amenable number.

551425 is a deficient number, since it is larger than the sum of its proper divisors (269951).

551425 is a wasteful number, since it uses less digits than its factorization.

551425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 172 counting only the distinct ones).

The product of its digits is 1000, while the sum is 22.

The square root of 551425 is about 742.5799620243. The cubic root of 551425 is about 82.0028256016.

The spelling of 551425 in words is "five hundred fifty-one thousand, four hundred twenty-five".