555645040 has 80 divisors (see below), whose sum is σ = 1353770496. Its totient is φ = 211692800.

The previous prime is 555645037. The next prime is 555645043. The reversal of 555645040 is 40546555.

It is an interprime number because it is at equal distance from previous prime (555645037) and next prime (555645043).

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (34) 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 = 555644987 and 555645005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555645043) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 571755 + ... + 572725.

Almost surely, 2^555645040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555645040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (676885248).

555645040 is an abundant number, since it is smaller than the sum of its proper divisors (798125456).

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

555645040 is a wasteful number, since it uses less digits than its factorization.

555645040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318 (or 1312 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

The square root of 555645040 is about 23572.1242148433. The cubic root of 555645040 is about 822.1148265974.

The spelling of 555645040 in words is "five hundred fifty-five million, six hundred forty-five thousand, forty".