501425440 has 24 divisors (see below), whose sum is σ = 1184617980. Its totient is φ = 200570112.

The previous prime is 501425413. The next prime is 501425459. The reversal of 501425440 is 44524105.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 409495696 + 91929744 = 20236^2 + 9588^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1566795 + ... + 1567114.

Almost surely, 2^501425440 is an apocalyptic number.

It is an amenable number.

501425440 is an abundant number, since it is smaller than the sum of its proper divisors (683192540).

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

501425440 is a wasteful number, since it uses less digits than its factorization.

501425440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3133924 (or 3133916 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 501425440 is about 22392.5308976007. The cubic root of 501425440 is about 794.4540586785.

Adding to 501425440 its reverse (44524105), we get a palindrome (545949545).

The spelling of 501425440 in words is "five hundred one million, four hundred twenty-five thousand, four hundred forty".