501132997 has 4 divisors (see below), whose sum is σ = 501484140. Its totient is φ = 500781856.

The previous prime is 501132979. The next prime is 501133019. The reversal of 501132997 is 799231105.

It is a Cunningham number, because it is equal to 22386²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 415588996 + 85544001 = 20386^2 + 9249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-501132997 is a prime.

It is a super-2 number, since 2×501132997² = 502268561364404018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501132977) 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, 173422 + ... + 176287.

It is an arithmetic number, because the mean of its divisors is an integer number (125371035).

Almost surely, 2^501132997 is an apocalyptic number.

It is an amenable number.

501132997 is a deficient number, since it is larger than the sum of its proper divisors (351143).

501132997 is a wasteful number, since it uses less digits than its factorization.

501132997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351142.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 501132997 is about 22386.0000223354. Note that the first 4 decimals coincide. The cubic root of 501132997 is about 794.2995806035.

The spelling of 501132997 in words is "five hundred one million, one hundred thirty-two thousand, nine hundred ninety-seven".