501140440 has 32 divisors (see below), whose sum is σ = 1148845680. Its totient is φ = 196673152.

The previous prime is 501140413. The next prime is 501140441. The reversal of 501140440 is 44041105.

It is a super-2 number, since 2×501140440² = 502283481206787200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501140441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116074 + ... + 120313.

Almost surely, 2^501140440 is an apocalyptic number.

It is an amenable number.

501140440 is an abundant number, since it is smaller than the sum of its proper divisors (647705240).

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

501140440 is a wasteful number, since it uses less digits than its factorization.

501140440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236451 (or 236447 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 501140440 is about 22386.1662640122. The cubic root of 501140440 is about 794.3035129878.

Adding to 501140440 its reverse (44041105), we get a palindrome (545181545).

It can be divided in two parts, 5011 and 40440, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 501140440 in words is "five hundred one million, one hundred forty thousand, four hundred forty".