501669953 has 4 divisors (see below), whose sum is σ = 502069680. Its totient is φ = 501270228.

The previous prime is 501669947. The next prime is 501670003. The reversal of 501669953 is 359966105.

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 501669953 - 2²⁸ = 233234497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (501669913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197975 + ... + 200492.

It is an arithmetic number, because the mean of its divisors is an integer number (125517420).

Almost surely, 2^501669953 is an apocalyptic number.

It is an amenable number.

501669953 is a deficient number, since it is larger than the sum of its proper divisors (399727).

501669953 is a wasteful number, since it uses less digits than its factorization.

501669953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399726.

The product of its (nonzero) digits is 218700, while the sum is 44.

The square root of 501669953 is about 22397.9899321345. The cubic root of 501669953 is about 794.5831724431.

The spelling of 501669953 in words is "five hundred one million, six hundred sixty-nine thousand, nine hundred fifty-three".