551623345 has 32 divisors (see below), whose sum is σ = 816221952. Its totient is φ = 348509952.

The previous prime is 551623337. The next prime is 551623351. The reversal of 551623345 is 543326155.

It is not a de Polignac number, because 551623345 - 2³ = 551623337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551623345.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 401079 + ... + 402451.

It is an arithmetic number, because the mean of its divisors is an integer number (25506936).

Almost surely, 2^551623345 is an apocalyptic number.

It is an amenable number.

551623345 is a deficient number, since it is larger than the sum of its proper divisors (264598607).

551623345 is a wasteful number, since it uses less digits than its factorization.

551623345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281.

The product of its digits is 54000, while the sum is 34.

The square root of 551623345 is about 23486.6631303810. The cubic root of 551623345 is about 820.1265643428.

The spelling of 551623345 in words is "five hundred fifty-one million, six hundred twenty-three thousand, three hundred forty-five".