501099 has 4 divisors (see below), whose sum is σ = 668136. Its totient is φ = 334064.

The previous prime is 501089. The next prime is 501103. The reversal of 501099 is 990105.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 501099 - 2⁹ = 500587 is a prime.

It is a super-2 number, since 2×501099² = 502200415602, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (501019) 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, 83514 + ... + 83519.

It is an arithmetic number, because the mean of its divisors is an integer number (167034).

2⁵⁰¹⁰⁹⁹ is an apocalyptic number.

501099 is a deficient number, since it is larger than the sum of its proper divisors (167037).

501099 is a wasteful number, since it uses less digits than its factorization.

501099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167036.

The product of its (nonzero) digits is 405, while the sum is 24.

The square root of 501099 is about 707.8834649856. The cubic root of 501099 is about 79.4281618364.

The spelling of 501099 in words is "five hundred one thousand, ninety-nine".