551280852 has 18 divisors (see below), whose sum is σ = 1393515578. Its totient is φ = 183760272.

The previous prime is 551280841. The next prime is 551280883. The reversal of 551280852 is 258082155.

551280852 is a `hidden beast` number, since 551 + 28 + 0 + 85 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 422549136 + 128731716 = 20556^2 + 11346^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 15313357 = 551280852 / (5 + 5 + 1 + 2 + 8 + 0 + 8 + 5 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7656643 + ... + 7656714.

Almost surely, 2^551280852 is an apocalyptic number.

It is an amenable number.

551280852 is an abundant number, since it is smaller than the sum of its proper divisors (842234726).

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

551280852 is a wasteful number, since it uses less digits than its factorization.

551280852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15313367 (or 15313362 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

The square root of 551280852 is about 23479.3707752146. The cubic root of 551280852 is about 819.9567952648.

It can be divided in two parts, 5512808 and 52, that added together give a triangular number (5512860 = T₃₃₂₀).

The spelling of 551280852 in words is "five hundred fifty-one million, two hundred eighty thousand, eight hundred fifty-two".