555494515540 has 24 divisors (see below), whose sum is σ = 1166553165960. Its totient is φ = 222195009408.

The previous prime is 555494515523. The next prime is 555494515547. The reversal of 555494515540 is 45515494555.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 78115778064 + 477378737476 = 279492^2 + 690926^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555494515547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2327614 + ... + 2555146.

It is an arithmetic number, because the mean of its divisors is an integer number (48606381915).

Almost surely, 2^555494515540 is an apocalyptic number.

It is an amenable number.

555494515540 is an abundant number, since it is smaller than the sum of its proper divisors (611058650420).

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

555494515540 is a wasteful number, since it uses less digits than its factorization.

555494515540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349611 (or 349609 counting only the distinct ones).

The product of its (nonzero) digits is 9000000, while the sum is 52.

The spelling of 555494515540 in words is "five hundred fifty-five billion, four hundred ninety-four million, five hundred fifteen thousand, five hundred forty".