50636645 has 4 divisors (see below), whose sum is σ = 60763980. Its totient is φ = 40509312.

The previous prime is 50636623. The next prime is 50636647. The reversal of 50636645 is 54663605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54663605 = 5 ⋅10932721.

It can be written as a sum of positive squares in 2 ways, for example, as 12271009 + 38365636 = 3503^2 + 6194^2 .

It is a cyclic number.

It is not a de Polignac number, because 50636645 - 2²⁴ = 33859429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50636647) 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, 5063660 + ... + 5063669.

It is an arithmetic number, because the mean of its divisors is an integer number (15190995).

Almost surely, 2^50636645 is an apocalyptic number.

It is an amenable number.

50636645 is a deficient number, since it is larger than the sum of its proper divisors (10127335).

50636645 is a wasteful number, since it uses less digits than its factorization.

50636645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10127334.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 50636645 is about 7115.9430155110. The cubic root of 50636645 is about 369.9601734586.

The spelling of 50636645 in words is "fifty million, six hundred thirty-six thousand, six hundred forty-five".