501435140 has 12 divisors (see below), whose sum is σ = 1053013836. Its totient is φ = 200574048.

The previous prime is 501435139. The next prime is 501435149. The reversal of 501435140 is 41534105.

It can be written as a sum of positive squares in 2 ways, for example, as 287573764 + 213861376 = 16958^2 + 14624^2 .

It is not an unprimeable number, because it can be changed into a prime (501435149) 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, 12535859 + ... + 12535898.

It is an arithmetic number, because the mean of its divisors is an integer number (87751153).

Almost surely, 2^501435140 is an apocalyptic number.

It is an amenable number.

501435140 is an abundant number, since it is smaller than the sum of its proper divisors (551578696).

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

501435140 is a wasteful number, since it uses less digits than its factorization.

501435140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25071766 (or 25071764 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 501435140 is about 22392.7474866306. The cubic root of 501435140 is about 794.4591815104.

Adding to 501435140 its reverse (41534105), we get a palindrome (542969245).

The spelling of 501435140 in words is "five hundred one million, four hundred thirty-five thousand, one hundred forty".