50420137 has 4 divisors (see below), whose sum is σ = 50451156. Its totient is φ = 50389120.

The previous prime is 50420131. The next prime is 50420171. The reversal of 50420137 is 73102405.

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 36252441 + 14167696 = 6021^2 + 3764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50420137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50420131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12928 + ... + 16369.

It is an arithmetic number, because the mean of its divisors is an integer number (12612789).

Almost surely, 2^50420137 is an apocalyptic number.

It is an amenable number.

50420137 is a deficient number, since it is larger than the sum of its proper divisors (31019).

50420137 is a wasteful number, since it uses less digits than its factorization.

50420137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31018.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 50420137 is about 7100.7138373547. The cubic root of 50420137 is about 369.4321384100.

The spelling of 50420137 in words is "fifty million, four hundred twenty thousand, one hundred thirty-seven".