505305157 has 8 divisors (see below), whose sum is σ = 577843200. Its totient is φ = 432855024.

The previous prime is 505305139. The next prime is 505305167. The reversal of 505305157 is 751503505.

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

It is not a de Polignac number, because 505305157 - 2¹¹ = 505303109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505305167) 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, 9157 + ... + 33082.

It is an arithmetic number, because the mean of its divisors is an integer number (72230400).

Almost surely, 2^505305157 is an apocalyptic number.

It is an amenable number.

505305157 is a deficient number, since it is larger than the sum of its proper divisors (72538043).

505305157 is a wasteful number, since it uses less digits than its factorization.

505305157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43955.

The product of its (nonzero) digits is 13125, while the sum is 31.

The square root of 505305157 is about 22478.9936829921. The cubic root of 505305157 is about 796.4977931612.

The spelling of 505305157 in words is "five hundred five million, three hundred five thousand, one hundred fifty-seven".