501161340 has 96 divisors (see below), whose sum is σ = 1449020160. Its totient is φ = 129355776.

The previous prime is 501161333. The next prime is 501161341. The reversal of 501161340 is 43161105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501161341) 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, 236124 + ... + 238236.

It is an arithmetic number, because the mean of its divisors is an integer number (15093960).

Almost surely, 2^501161340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501161340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (724510080).

501161340 is an abundant number, since it is smaller than the sum of its proper divisors (947858820).

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

501161340 is a wasteful number, since it uses less digits than its factorization.

501161340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2251 (or 2249 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 501161340 is about 22386.6330652914. The cubic root of 501161340 is about 794.3145549442.

It can be divided in two parts, 501161 and 340, that added together give a triangular number (501501 = T₁₀₀₁).

The spelling of 501161340 in words is "five hundred one million, one hundred sixty-one thousand, three hundred forty".