505655151 has 8 divisors (see below), whose sum is σ = 709691520. Its totient is φ = 319361112.

The previous prime is 505655141. The next prime is 505655179. The reversal of 505655151 is 151556505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505655151 - 2²⁵ = 472100719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505655141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4435515 + ... + 4435628.

It is an arithmetic number, because the mean of its divisors is an integer number (88711440).

Almost surely, 2^505655151 is an apocalyptic number.

505655151 is a deficient number, since it is larger than the sum of its proper divisors (204036369).

505655151 is a wasteful number, since it uses less digits than its factorization.

505655151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8871165.

The product of its (nonzero) digits is 18750, while the sum is 33.

The square root of 505655151 is about 22486.7772479740. Note that the first 3 decimals coincide. The cubic root of 505655151 is about 796.6816458341.

The spelling of 505655151 in words is "five hundred five million, six hundred fifty-five thousand, one hundred fifty-one".