507805057 has 4 divisors (see below), whose sum is σ = 521529556. Its totient is φ = 494080560.

The previous prime is 507805037. The next prime is 507805069. The reversal of 507805057 is 750508705.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 356416641 + 151388416 = 18879^2 + 12304^2 .

It is a cyclic number.

It is not a de Polignac number, because 507805057 - 2⁷ = 507804929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 13724461 = 507805057 / (5 + 0 + 7 + 8 + 0 + 5 + 0 + 5 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (507805037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6862194 + ... + 6862267.

It is an arithmetic number, because the mean of its divisors is an integer number (130382389).

Almost surely, 2^507805057 is an apocalyptic number.

It is an amenable number.

507805057 is a deficient number, since it is larger than the sum of its proper divisors (13724499).

507805057 is a wasteful number, since it uses less digits than its factorization.

507805057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13724498.

The product of its (nonzero) digits is 49000, while the sum is 37.

The square root of 507805057 is about 22534.5303257024. The cubic root of 507805057 is about 797.8091394940.

The spelling of 507805057 in words is "five hundred seven million, eight hundred five thousand, fifty-seven".