505071957 has 8 divisors (see below), whose sum is σ = 725231584. Its totient is φ = 310813488.

The previous prime is 505071947. The next prime is 505071971. The reversal of 505071957 is 759170505.

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

It is not a de Polignac number, because 505071957 - 2⁷ = 505071829 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 12950563 = 505071957 / (5 + 0 + 5 + 0 + 7 + 1 + 9 + 5 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505071947) 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, 6475243 + ... + 6475320.

It is an arithmetic number, because the mean of its divisors is an integer number (90653948).

Almost surely, 2^505071957 is an apocalyptic number.

It is an amenable number.

505071957 is a deficient number, since it is larger than the sum of its proper divisors (220159627).

505071957 is a wasteful number, since it uses less digits than its factorization.

505071957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12950579.

The product of its (nonzero) digits is 55125, while the sum is 39.

The square root of 505071957 is about 22473.8060194530. The cubic root of 505071957 is about 796.3752455193.

The spelling of 505071957 in words is "five hundred five million, seventy-one thousand, nine hundred fifty-seven".