555666540 has 96 divisors (see below), whose sum is σ = 1827899136. Its totient is φ = 124343040.

The previous prime is 555666523. The next prime is 555666547. The reversal of 555666540 is 45666555.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 555666492 and 555666501.

It is not an unprimeable number, because it can be changed into a prime (555666547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23802 + ... + 40961.

It is an arithmetic number, because the mean of its divisors is an integer number (19040616).

Almost surely, 2^555666540 is an apocalyptic number.

It is an amenable number.

555666540 is an abundant number, since it is smaller than the sum of its proper divisors (1272232596).

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

555666540 is a wasteful number, since it uses less digits than its factorization.

555666540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64799 (or 64797 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 42.

The square root of 555666540 is about 23572.5802575789. The cubic root of 555666540 is about 822.1254300340.

The spelling of 555666540 in words is "five hundred fifty-five million, six hundred sixty-six thousand, five hundred forty".