50561394 has 64 divisors (see below), whose sum is σ = 116054400. Its totient is φ = 14556672.

The previous prime is 50561393. The next prime is 50561419. The reversal of 50561394 is 49316505.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (50561393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161382 + ... + 161694.

It is an arithmetic number, because the mean of its divisors is an integer number (1813350).

Almost surely, 2^50561394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50561394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58027200).

50561394 is an abundant number, since it is smaller than the sum of its proper divisors (65493006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50561394 is a wasteful number, since it uses less digits than its factorization.

50561394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 50561394 is about 7110.6535564602. The cubic root of 50561394 is about 369.7768169498.

Adding to 50561394 its reverse (49316505), we get a palindrome (99877899).

The spelling of 50561394 in words is "fifty million, five hundred sixty-one thousand, three hundred ninety-four".