505646157 has 8 divisors (see below), whose sum is σ = 674508384. Its totient is φ = 336940688.

The previous prime is 505646149. The next prime is 505646213. The reversal of 505646157 is 751646505.

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 505646157 - 2³ = 505646149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505646137) 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, 31443 + ... + 44720.

It is an arithmetic number, because the mean of its divisors is an integer number (84313548).

Almost surely, 2^505646157 is an apocalyptic number.

It is an amenable number.

505646157 is a deficient number, since it is larger than the sum of its proper divisors (168862227).

505646157 is a wasteful number, since it uses less digits than its factorization.

505646157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78379.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 505646157 is about 22486.5772628917. The cubic root of 505646157 is about 796.6769223269.

The spelling of 505646157 in words is "five hundred five million, six hundred forty-six thousand, one hundred fifty-seven".