501085331 has 4 divisors (see below), whose sum is σ = 503981952. Its totient is φ = 498188712.

The previous prime is 501085307. The next prime is 501085369. The reversal of 501085331 is 133580105.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133580105 = 5 ⋅26716021.

It is a cyclic number.

It is not a de Polignac number, because 501085331 - 2¹⁰ = 501084307 is a prime.

It is a super-2 number, since 2×501085331² = 502173017886759122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 501085331.

It is not an unprimeable number, because it can be changed into a prime (501085301) 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, 1448051 + ... + 1448396.

It is an arithmetic number, because the mean of its divisors is an integer number (125995488).

Almost surely, 2^501085331 is an apocalyptic number.

501085331 is a deficient number, since it is larger than the sum of its proper divisors (2896621).

501085331 is a wasteful number, since it uses less digits than its factorization.

501085331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2896620.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 501085331 is about 22384.9353584057. The cubic root of 501085331 is about 794.2743961485.

The spelling of 501085331 in words is "five hundred one million, eighty-five thousand, three hundred thirty-one".