551278080 has 240 divisors, whose sum is σ = 1941866784. Its totient is φ = 144506880.

The previous prime is 551278067. The next prime is 551278093. The reversal of 551278080 is 80872155.

551278080 is a `hidden beast` number, since 551 + 27 + 8 + 0 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (551278067) and next prime (551278093).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1635672 + ... + 1636008.

Almost surely, 2^551278080 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 551278080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (970933392).

551278080 is an abundant number, since it is smaller than the sum of its proper divisors (1390588704).

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

551278080 is a wasteful number, since it uses less digits than its factorization.

551278080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 551278080 is about 23479.3117445976. The cubic root of 551278080 is about 819.9554209356.

It can be divided in two parts, 5512780 and 80, that added together give a triangular number (5512860 = T₃₃₂₀).

The spelling of 551278080 in words is "five hundred fifty-one million, two hundred seventy-eight thousand, eighty".