551825406 has 64 divisors (see below), whose sum is σ = 1416476160. Its totient is φ = 157380480.

The previous prime is 551825399. The next prime is 551825411. The reversal of 551825406 is 604528155.

It is a super-2 number, since 2×551825406² = 609022557414129672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17226 + ... + 37421.

It is an arithmetic number, because the mean of its divisors is an integer number (22132440).

Almost surely, 2^551825406 is an apocalyptic number.

551825406 is an abundant number, since it is smaller than the sum of its proper divisors (864650754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551825406 is a wasteful number, since it uses less digits than its factorization.

551825406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54686 (or 54680 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 551825406 is about 23490.9643480211. The cubic root of 551825406 is about 820.2266902502.

It can be divided in two parts, 55182 and 5406, that multiplied together give a palindrome (298313892).

The spelling of 551825406 in words is "five hundred fifty-one million, eight hundred twenty-five thousand, four hundred six".