50136631 has 4 divisors (see below), whose sum is σ = 50580432. Its totient is φ = 49692832.

The previous prime is 50136623. The next prime is 50136643. The reversal of 50136631 is 13663105.

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

It is a cyclic number.

It is not a de Polignac number, because 50136631 - 2³ = 50136623 is a prime.

It is a super-2 number, since 2×50136631² = 5027363536060322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50136596 and 50136605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50136601) 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, 221731 + ... + 221956.

It is an arithmetic number, because the mean of its divisors is an integer number (12645108).

Almost surely, 2^50136631 is an apocalyptic number.

50136631 is a deficient number, since it is larger than the sum of its proper divisors (443801).

50136631 is a wasteful number, since it uses less digits than its factorization.

50136631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443800.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 50136631 is about 7080.7224913846. The cubic root of 50136631 is about 368.7384132719.

Adding to 50136631 its reverse (13663105), we get a palindrome (63799736).

The spelling of 50136631 in words is "fifty million, one hundred thirty-six thousand, six hundred thirty-one".