501161039 has 4 divisors (see below), whose sum is σ = 501610824. Its totient is φ = 500711256.

The previous prime is 501161033. The next prime is 501161117. The reversal of 501161039 is 930161105.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 930161105 = 5 ⋅186032221.

It is a cyclic number.

It is not a de Polignac number, because 501161039 - 2⁸ = 501160783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 501160999 and 501161017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501161033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223217 + ... + 225450.

It is an arithmetic number, because the mean of its divisors is an integer number (125402706).

Almost surely, 2^501161039 is an apocalyptic number.

501161039 is a deficient number, since it is larger than the sum of its proper divisors (449785).

501161039 is a wasteful number, since it uses less digits than its factorization.

501161039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449784.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 501161039 is about 22386.6263425287. The cubic root of 501161039 is about 794.3143959210.

The spelling of 501161039 in words is "five hundred one million, one hundred sixty-one thousand, thirty-nine".