501435138 has 8 divisors (see below), whose sum is σ = 1002870288. Its totient is φ = 167145044.

The previous prime is 501435101. The next prime is 501435139. The reversal of 501435138 is 831534105.

It is a sphenic number, since it is the product of 3 distinct primes.

501435138 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (501435139) 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, 41786256 + ... + 41786267.

It is an arithmetic number, because the mean of its divisors is an integer number (125358786).

Almost surely, 2^501435138 is an apocalyptic number.

501435138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

501435138 is a wasteful number, since it uses less digits than its factorization.

501435138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83572528.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 501435138 is about 22392.7474419733. The cubic root of 501435138 is about 794.4591804541.

The spelling of 501435138 in words is "five hundred one million, four hundred thirty-five thousand, one hundred thirty-eight".