556339540 has 12 divisors (see below), whose sum is σ = 1168313076. Its totient is φ = 222535808.

The previous prime is 556339529. The next prime is 556339543. The reversal of 556339540 is 45933655.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 177102864 + 379236676 = 13308^2 + 19474^2 .

It is a junction number, because it is equal to n+sod(n) for n = 556339493 and 556339502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556339543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13908469 + ... + 13908508.

It is an arithmetic number, because the mean of its divisors is an integer number (97359423).

Almost surely, 2^556339540 is an apocalyptic number.

It is an amenable number.

556339540 is an abundant number, since it is smaller than the sum of its proper divisors (611973536).

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

556339540 is a wasteful number, since it uses less digits than its factorization.

556339540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27816986 (or 27816984 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 40.

The square root of 556339540 is about 23586.8509979607. The cubic root of 556339540 is about 822.4572040691.

The spelling of 556339540 in words is "five hundred fifty-six million, three hundred thirty-nine thousand, five hundred forty".