551606155 has 8 divisors (see below), whose sum is σ = 666144432. Its totient is φ = 438473568.

The previous prime is 551606113. The next prime is 551606173.

551606155 is nontrivially palindromic in base 10.

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 551606155 - 2⁹ = 551605643 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 551606155.

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, 350557 + ... + 352126.

It is an arithmetic number, because the mean of its divisors is an integer number (83268054).

Almost surely, 2^551606155 is an apocalyptic number.

551606155 is a deficient number, since it is larger than the sum of its proper divisors (114538277).

551606155 is a wasteful number, since it uses less digits than its factorization.

551606155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702845.

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 551606155 is about 23486.2971751615. The cubic root of 551606155 is about 820.1180451711.

The spelling of 551606155 in words is "five hundred fifty-one million, six hundred six thousand, one hundred fifty-five".