501381380 has 12 divisors (see below), whose sum is σ = 1052900940. Its totient is φ = 200552544.

The previous prime is 501381379. The next prime is 501381389. The reversal of 501381380 is 83183105.

It can be written as a sum of positive squares in 2 ways, for example, as 389825536 + 111555844 = 19744^2 + 10562^2 .

It is not an unprimeable number, because it can be changed into a prime (501381389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12534515 + ... + 12534554.

It is an arithmetic number, because the mean of its divisors is an integer number (87741745).

Almost surely, 2^501381380 is an apocalyptic number.

It is an amenable number.

501381380 is an abundant number, since it is smaller than the sum of its proper divisors (551519560).

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

501381380 is a wasteful number, since it uses less digits than its factorization.

501381380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25069078 (or 25069076 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 501381380 is about 22391.5470658014. The cubic root of 501381380 is about 794.4307885714.

The spelling of 501381380 in words is "five hundred one million, three hundred eighty-one thousand, three hundred eighty".