556825645 has 4 divisors (see below), whose sum is σ = 668190780. Its totient is φ = 445460512.

The previous prime is 556825639. The next prime is 556825673. The reversal of 556825645 is 546528655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 422590249 + 134235396 = 20557^2 + 11586^2 .

It is a cyclic number.

It is not a de Polignac number, because 556825645 - 2⁵ = 556825613 is a prime.

It is a super-3 number, since 3×556825645³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 556825595 and 556825604.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 55682560 + ... + 55682569.

It is an arithmetic number, because the mean of its divisors is an integer number (167047695).

Almost surely, 2^556825645 is an apocalyptic number.

It is an amenable number.

556825645 is a deficient number, since it is larger than the sum of its proper divisors (111365135).

556825645 is a wasteful number, since it uses less digits than its factorization.

556825645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111365134.

The product of its digits is 1440000, while the sum is 46.

The square root of 556825645 is about 23597.1533240770. The cubic root of 556825645 is about 822.6966766359.

It can be divided in two parts, 5568 and 25645, that added together give a palindrome (31213).

The spelling of 556825645 in words is "five hundred fifty-six million, eight hundred twenty-five thousand, six hundred forty-five".