551420345 has 16 divisors (see below), whose sum is σ = 756674688. Its totient is φ = 377896320.

The previous prime is 551420333. The next prime is 551420371. The reversal of 551420345 is 543024155.

It is not a de Polignac number, because 551420345 - 2⁴ = 551420329 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76382 + ... + 83288.

It is an arithmetic number, because the mean of its divisors is an integer number (47292168).

Almost surely, 2^551420345 is an apocalyptic number.

It is an amenable number.

551420345 is a deficient number, since it is larger than the sum of its proper divisors (205254343).

551420345 is a wasteful number, since it uses less digits than its factorization.

551420345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9200.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 551420345 is about 23482.3411311564. The cubic root of 551420345 is about 820.0259485146.

The spelling of 551420345 in words is "five hundred fifty-one million, four hundred twenty thousand, three hundred forty-five".