501640134 has 64 divisors (see below), whose sum is σ = 1046960640. Its totient is φ = 160160000.

The previous prime is 501640133. The next prime is 501640141. The reversal of 501640134 is 431046105.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501640133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3829249 + ... + 3829379.

It is an arithmetic number, because the mean of its divisors is an integer number (16358760).

Almost surely, 2^501640134 is an apocalyptic number.

501640134 is an abundant number, since it is smaller than the sum of its proper divisors (545320506).

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

501640134 is a wasteful number, since it uses less digits than its factorization.

501640134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 501640134 is about 22397.3242598307. The cubic root of 501640134 is about 794.5674289283.

Adding to 501640134 its reverse (431046105), we get a palindrome (932686239).

It can be divided in two parts, 5016 and 40134, that added together give a triangular number (45150 = T₃₀₀).

The spelling of 501640134 in words is "five hundred one million, six hundred forty thousand, one hundred thirty-four".