50781018 has 16 divisors (see below), whose sum is σ = 101649600. Its totient is φ = 16912416.

The previous prime is 50781011. The next prime is 50781037. The reversal of 50781018 is 81018705.

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 (50781011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5758 + ... + 11606.

It is an arithmetic number, because the mean of its divisors is an integer number (6353100).

Almost surely, 2^50781018 is an apocalyptic number.

50781018 is an abundant number, since it is smaller than the sum of its proper divisors (50868582).

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

50781018 is a wasteful number, since it uses less digits than its factorization.

50781018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7301.

The product of its (nonzero) digits is 2240, while the sum is 30.

The square root of 50781018 is about 7126.0801286542. The cubic root of 50781018 is about 370.3114446123.

The spelling of 50781018 in words is "fifty million, seven hundred eighty-one thousand, eighteen".