551646155 has 8 divisors (see below), whose sum is σ = 662735472. Its totient is φ = 440810208.

The previous prime is 551646089. The next prime is 551646157.

It is a happy number.

551646155 is nontrivially palindromic in base 10.

551646155 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.

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 551646155 - 2¹⁰ = 551645131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551646157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58517 + ... + 67286.

It is an arithmetic number, because the mean of its divisors is an integer number (82841934).

Almost surely, 2^551646155 is an apocalyptic number.

551646155 is a deficient number, since it is larger than the sum of its proper divisors (111089317).

551646155 is a wasteful number, since it uses less digits than its factorization.

551646155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126685.

The product of its digits is 90000, while the sum is 38.

The square root of 551646155 is about 23487.1487200980. The cubic root of 551646155 is about 820.1378684505.

The spelling of 551646155 in words is "five hundred fifty-one million, six hundred forty-six thousand, one hundred fifty-five".