50138761 has 4 divisors (see below), whose sum is σ = 50176000. Its totient is φ = 50101524.

The previous prime is 50138717. The next prime is 50138789. The reversal of 50138761 is 16783105.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50138761 - 2⁷ = 50138633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50138791) 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, 16521 + ... + 19318.

It is an arithmetic number, because the mean of its divisors is an integer number (12544000).

Almost surely, 2^50138761 is an apocalyptic number.

It is an amenable number.

50138761 is a deficient number, since it is larger than the sum of its proper divisors (37239).

50138761 is a wasteful number, since it uses less digits than its factorization.

50138761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37238.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 50138761 is about 7080.8728981673. The cubic root of 50138761 is about 368.7436350141.

The spelling of 50138761 in words is "fifty million, one hundred thirty-eight thousand, seven hundred sixty-one".