550501555 has 8 divisors (see below), whose sum is σ = 661312512. Its totient is φ = 439927488.

The previous prime is 550501543. The next prime is 550501571. The reversal of 550501555 is 555105055.

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

It is a cyclic number.

It is not a de Polignac number, because 550501555 - 2²⁷ = 416283827 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54067 + ... + 63436.

It is an arithmetic number, because the mean of its divisors is an integer number (82664064).

Almost surely, 2^550501555 is an apocalyptic number.

550501555 is a deficient number, since it is larger than the sum of its proper divisors (110810957).

550501555 is a wasteful number, since it uses less digits than its factorization.

550501555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118445.

The product of its (nonzero) digits is 15625, while the sum is 31.

The square root of 550501555 is about 23462.7695509290. The cubic root of 550501555 is about 819.5702462553.

The spelling of 550501555 in words is "five hundred fifty million, five hundred one thousand, five hundred fifty-five".