551625155 has 8 divisors (see below), whose sum is σ = 662676000. Its totient is φ = 440816256.

The previous prime is 551625133. The next prime is 551625181. The reversal of 551625155 is 551526155.

It is a happy number.

551625155 is digitally balanced in base 6, because in such base 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 551625155 - 2⁶ = 551625091 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55430 + ... + 64619.

It is an arithmetic number, because the mean of its divisors is an integer number (82834500).

Almost surely, 2^551625155 is an apocalyptic number.

551625155 is a deficient number, since it is larger than the sum of its proper divisors (111050845).

551625155 is a wasteful number, since it uses less digits than its factorization.

551625155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120973.

The product of its digits is 37500, while the sum is 35.

The square root of 551625155 is about 23486.7016628559. The cubic root of 551625155 is about 820.1274613483.

The spelling of 551625155 in words is "five hundred fifty-one million, six hundred twenty-five thousand, one hundred fifty-five".