551128479 has 8 divisors (see below), whose sum is σ = 801641472. Its totient is φ = 334017240.

The previous prime is 551128451. The next prime is 551128493. The reversal of 551128479 is 974821155.

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

It is not a de Polignac number, because 551128479 - 2¹³ = 551120287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551128479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551128429) 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, 8350399 + ... + 8350464.

It is an arithmetic number, because the mean of its divisors is an integer number (100205184).

Almost surely, 2^551128479 is an apocalyptic number.

551128479 is a deficient number, since it is larger than the sum of its proper divisors (250512993).

551128479 is a wasteful number, since it uses less digits than its factorization.

551128479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16700877.

The product of its digits is 100800, while the sum is 42.

The square root of 551128479 is about 23476.1257238072. The cubic root of 551128479 is about 819.8812434602.

The spelling of 551128479 in words is "five hundred fifty-one million, one hundred twenty-eight thousand, four hundred seventy-nine".