501065405 has 8 divisors (see below), whose sum is σ = 601771992. Its totient is φ = 400523328.

The previous prime is 501065399. The next prime is 501065441. The reversal of 501065405 is 504560105.

It can be written as a sum of positive squares in 4 ways, for example, as 11195716 + 489869689 = 3346^2 + 22133^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 501065405 - 2²² = 496871101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34322 + ... + 46691.

It is an arithmetic number, because the mean of its divisors is an integer number (75221499).

Almost surely, 2^501065405 is an apocalyptic number.

It is an amenable number.

501065405 is a deficient number, since it is larger than the sum of its proper divisors (100706587).

501065405 is a wasteful number, since it uses less digits than its factorization.

501065405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82255.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 501065405 is about 22384.4902778687. The cubic root of 501065405 is about 794.2638677212.

The spelling of 501065405 in words is "five hundred one million, sixty-five thousand, four hundred five".