50781290 has 16 divisors (see below), whose sum is σ = 104464512. Its totient is φ = 17410704.

The previous prime is 50781277. The next prime is 50781293. The reversal of 50781290 is 9218705.

50781290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (50781293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362654 + ... + 362793.

It is an arithmetic number, because the mean of its divisors is an integer number (6529032).

Almost surely, 2^50781290 is an apocalyptic number.

50781290 is an abundant number, since it is smaller than the sum of its proper divisors (53683222).

50781290 is a wasteful number, since it uses less digits than its factorization.

50781290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725461.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 50781290 is about 7126.0992134547. The cubic root of 50781290 is about 370.3121057815.

Adding to 50781290 its reverse (9218705), we get a palindrome (59999995).

The spelling of 50781290 in words is "fifty million, seven hundred eighty-one thousand, two hundred ninety".