551223215 has 8 divisors (see below), whose sum is σ = 700377840. Its totient is φ = 415038592.

The previous prime is 551223209. The next prime is 551223217. The reversal of 551223215 is 512322155.

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 551223215 - 2¹⁸ = 550961071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551223217) 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, 3242405 + ... + 3242574.

It is an arithmetic number, because the mean of its divisors is an integer number (87547230).

Almost surely, 2^551223215 is an apocalyptic number.

551223215 is a deficient number, since it is larger than the sum of its proper divisors (149154625).

551223215 is a wasteful number, since it uses less digits than its factorization.

551223215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6485001.

The product of its digits is 3000, while the sum is 26.

The square root of 551223215 is about 23478.1433465255. The cubic root of 551223215 is about 819.9282184835.

The spelling of 551223215 in words is "five hundred fifty-one million, two hundred twenty-three thousand, two hundred fifteen".