501940 has 12 divisors (see below), whose sum is σ = 1054116. Its totient is φ = 200768.

The previous prime is 501931. The next prime is 501947. The reversal of 501940 is 49105.

501940 = T₁₃₈ + T₁₃₉ + ... + T₁₇₇.

It can be written as a sum of positive squares in 2 ways, for example, as 163216 + 338724 = 404^2 + 582^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501947) 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, 12529 + ... + 12568.

It is an arithmetic number, because the mean of its divisors is an integer number (87843).

2⁵⁰¹⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

501940 is an abundant number, since it is smaller than the sum of its proper divisors (552176).

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

501940 is a wasteful number, since it uses less digits than its factorization.

501940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25106 (or 25104 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 501940 is about 708.4772402837. The cubic root of 501940 is about 79.4725720554.

It can be divided in two parts, 501 and 940, that added together give a palindrome (1441).

The spelling of 501940 in words is "five hundred one thousand, nine hundred forty".