550402 has 4 divisors (see below), whose sum is σ = 825606. Its totient is φ = 275200.

The previous prime is 550379. The next prime is 550427. The reversal of 550402 is 204055.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 301401 + 249001 = 549^2 + 499^2 .

It is an unprimeable number.

550402 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137599 + ... + 137602.

2⁵⁵⁰⁴⁰² is an apocalyptic number.

550402 is a deficient number, since it is larger than the sum of its proper divisors (275204).

550402 is a wasteful number, since it uses less digits than its factorization.

550402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275203.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 550402 is about 741.8908275481. The cubic root of 550402 is about 81.9520838442.

Adding to 550402 its reverse (204055), we get a palindrome (754457).

The spelling of 550402 in words is "five hundred fifty thousand, four hundred two".