50530290 has 32 divisors (see below), whose sum is σ = 128407680. Its totient is φ = 12681984.

The previous prime is 50530247. The next prime is 50530297. The reversal of 50530290 is 9203505.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 50530290.

It is not an unprimeable number, because it can be changed into a prime (50530297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49030 + ... + 50049.

It is an arithmetic number, because the mean of its divisors is an integer number (4012740).

Almost surely, 2^50530290 is an apocalyptic number.

50530290 is an abundant number, since it is smaller than the sum of its proper divisors (77877390).

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

50530290 is a wasteful number, since it uses less digits than its factorization.

50530290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99106.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 50530290 is about 7108.4660792607. The cubic root of 50530290 is about 369.7009758354.

Adding to 50530290 its reverse (9203505), we get a palindrome (59733795).

The spelling of 50530290 in words is "fifty million, five hundred thirty thousand, two hundred ninety".