551858345 has 8 divisors (see below), whose sum is σ = 677630976. Its totient is φ = 431219376.

The previous prime is 551858327. The next prime is 551858353. The reversal of 551858345 is 543858155.

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 551858345 - 2²⁶ = 484749481 is a prime.

It is a super-2 number, since 2×551858345² = 609095265892278050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 551858296 and 551858305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1283177 + ... + 1283606.

It is an arithmetic number, because the mean of its divisors is an integer number (84703872).

Almost surely, 2^551858345 is an apocalyptic number.

It is an amenable number.

551858345 is a deficient number, since it is larger than the sum of its proper divisors (125772631).

551858345 is a wasteful number, since it uses less digits than its factorization.

551858345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566831.

The product of its digits is 480000, while the sum is 44.

The square root of 551858345 is about 23491.6654369161. The cubic root of 551858345 is about 820.2430099708.

The spelling of 551858345 in words is "five hundred fifty-one million, eight hundred fifty-eight thousand, three hundred forty-five".