50730557 has 4 divisors (see below), whose sum is σ = 50816700. Its totient is φ = 50644416.

The previous prime is 50730553. The next prime is 50730577. The reversal of 50730557 is 75503705.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75503705 = 5 ⋅15100741.

It can be written as a sum of positive squares in 2 ways, for example, as 11930116 + 38800441 = 3454^2 + 6229^2 .

It is a cyclic number.

It is not a de Polignac number, because 50730557 - 2² = 50730553 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 (50730553) 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, 42182 + ... + 43367.

It is an arithmetic number, because the mean of its divisors is an integer number (12704175).

Almost surely, 2^50730557 is an apocalyptic number.

It is an amenable number.

50730557 is a deficient number, since it is larger than the sum of its proper divisors (86143).

50730557 is an equidigital number, since it uses as much as digits as its factorization.

50730557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86142.

The product of its (nonzero) digits is 18375, while the sum is 32.

The square root of 50730557 is about 7122.5386625837. The cubic root of 50730557 is about 370.1887447042.

The spelling of 50730557 in words is "fifty million, seven hundred thirty thousand, five hundred fifty-seven".