50505757 has 4 divisors (see below), whose sum is σ = 51005916. Its totient is φ = 50005600.

The previous prime is 50505751. The next prime is 50505761. The reversal of 50505757 is 75750505.

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 33108516 + 17397241 = 5754^2 + 4171^2 .

It is a cyclic number.

It is not a de Polignac number, because 50505757 - 2²³ = 42117149 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 (50505751) 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, 249928 + ... + 250129.

It is an arithmetic number, because the mean of its divisors is an integer number (12751479).

Almost surely, 2^50505757 is an apocalyptic number.

It is an amenable number.

50505757 is a deficient number, since it is larger than the sum of its proper divisors (500159).

50505757 is a wasteful number, since it uses less digits than its factorization.

50505757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500158.

The product of its (nonzero) digits is 30625, while the sum is 34.

The square root of 50505757 is about 7106.7402513389. The cubic root of 50505757 is about 369.6411348814.

The spelling of 50505757 in words is "fifty million, five hundred five thousand, seven hundred fifty-seven".