501065427 has 4 divisors (see below), whose sum is σ = 668087240. Its totient is φ = 334043616.

The previous prime is 501065399. The next prime is 501065441. The reversal of 501065427 is 724560105.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 501065427 - 2²⁰ = 500016851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 501065394 and 501065403.

It is not an unprimeable number, because it can be changed into a prime (501065827) 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, 83510902 + ... + 83510907.

It is an arithmetic number, because the mean of its divisors is an integer number (167021810).

Almost surely, 2^501065427 is an apocalyptic number.

501065427 is a deficient number, since it is larger than the sum of its proper divisors (167021813).

501065427 is a wasteful number, since it uses less digits than its factorization.

501065427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167021812.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 501065427 is about 22384.4907692804. The cubic root of 501065427 is about 794.2638793457.

The spelling of 501065427 in words is "five hundred one million, sixty-five thousand, four hundred twenty-seven".