555128797 has 8 divisors (see below), whose sum is σ = 582264576. Its totient is φ = 528631632.

The previous prime is 555128773. The next prime is 555128809. The reversal of 555128797 is 797821555.

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 555128797 - 2²³ = 546740189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 555128797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555128767) 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, 157873 + ... + 161350.

It is an arithmetic number, because the mean of its divisors is an integer number (72783072).

Almost surely, 2^555128797 is an apocalyptic number.

It is an amenable number.

555128797 is a deficient number, since it is larger than the sum of its proper divisors (27135779).

555128797 is a wasteful number, since it uses less digits than its factorization.

555128797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319307.

The product of its digits is 882000, while the sum is 49.

The square root of 555128797 is about 23561.1713842924. The cubic root of 555128797 is about 821.8601421015.

The spelling of 555128797 in words is "five hundred fifty-five million, one hundred twenty-eight thousand, seven hundred ninety-seven".