551551345 has 16 divisors (see below), whose sum is σ = 679730688. Its totient is φ = 429433920.

The previous prime is 551551333. The next prime is 551551379. The reversal of 551551345 is 543155155.

It is not a de Polignac number, because 551551345 - 2⁵ = 551551313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 551551345.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36052 + ... + 49018.

It is an arithmetic number, because the mean of its divisors is an integer number (42483168).

Almost surely, 2^551551345 is an apocalyptic number.

It is an amenable number.

551551345 is a deficient number, since it is larger than the sum of its proper divisors (128179343).

551551345 is a wasteful number, since it uses less digits than its factorization.

551551345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13200.

The product of its digits is 37500, while the sum is 34.

The square root of 551551345 is about 23485.1302955721. The cubic root of 551551345 is about 820.0908807661.

The spelling of 551551345 in words is "five hundred fifty-one million, five hundred fifty-one thousand, three hundred forty-five".