555720487 has 8 divisors (see below), whose sum is σ = 636911136. Its totient is φ = 474980352.

The previous prime is 555720419. The next prime is 555720491. The reversal of 555720487 is 784027555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-555720487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555724487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109978 + ... + 114919.

It is an arithmetic number, because the mean of its divisors is an integer number (79613892).

Almost surely, 2^555720487 is an apocalyptic number.

555720487 is a deficient number, since it is larger than the sum of its proper divisors (81190649).

555720487 is a wasteful number, since it uses less digits than its factorization.

555720487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225257.

The product of its (nonzero) digits is 392000, while the sum is 43.

The square root of 555720487 is about 23573.7245042017. The cubic root of 555720487 is about 822.1520345783.

The spelling of 555720487 in words is "five hundred fifty-five million, seven hundred twenty thousand, four hundred eighty-seven".