501065601 has 4 divisors (see below), whose sum is σ = 668087472. Its totient is φ = 334043732.

The previous prime is 501065561. The next prime is 501065611. The reversal of 501065601 is 106560105.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 501065601 - 2¹⁴ = 501049217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (501065611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83510931 + ... + 83510936.

It is an arithmetic number, because the mean of its divisors is an integer number (167021868).

Almost surely, 2^501065601 is an apocalyptic number.

It is an amenable number.

501065601 is a deficient number, since it is larger than the sum of its proper divisors (167021871).

501065601 is a wasteful number, since it uses less digits than its factorization.

501065601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167021870.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 501065601 is about 22384.4946558997. The cubic root of 501065601 is about 794.2639712843.

The spelling of 501065601 in words is "five hundred one million, sixty-five thousand, six hundred one".