555723540 has 72 divisors (see below), whose sum is σ = 1784863080. Its totient is φ = 139474944.

The previous prime is 555723503. The next prime is 555723551. The reversal of 555723540 is 45327555.

555723540 is a `hidden beast` number, since 55 + 572 + 35 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 132434064 + 423289476 = 11508^2 + 20574^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 555723495 and 555723504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87745 + ... + 93864.

It is an arithmetic number, because the mean of its divisors is an integer number (24789765).

Almost surely, 2^555723540 is an apocalyptic number.

It is an amenable number.

555723540 is an abundant number, since it is smaller than the sum of its proper divisors (1229139540).

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

555723540 is a wasteful number, since it uses less digits than its factorization.

555723540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181641 (or 181636 counting only the distinct ones).

The product of its (nonzero) digits is 105000, while the sum is 36.

The square root of 555723540 is about 23573.7892584116. The cubic root of 555723540 is about 822.1535401467.

The spelling of 555723540 in words is "five hundred fifty-five million, seven hundred twenty-three thousand, five hundred forty".