551052865 has 8 divisors (see below), whose sum is σ = 721378368. Its totient is φ = 400765680.

The previous prime is 551052767. The next prime is 551052881. The reversal of 551052865 is 568250155.

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

It is not a de Polignac number, because 551052865 - 2¹³ = 551044673 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5009517 + ... + 5009626.

It is an arithmetic number, because the mean of its divisors is an integer number (90172296).

Almost surely, 2^551052865 is an apocalyptic number.

551052865 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

551052865 is a deficient number, since it is larger than the sum of its proper divisors (170325503).

551052865 is a wasteful number, since it uses less digits than its factorization.

551052865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10019159.

The product of its (nonzero) digits is 60000, while the sum is 37.

The square root of 551052865 is about 23474.5152239615. The cubic root of 551052865 is about 819.8437462534.

It can be divided in two parts, 55105 and 2865, that added together give a triangular number (57970 = T₃₄₀).

The spelling of 551052865 in words is "five hundred fifty-one million, fifty-two thousand, eight hundred sixty-five".