550400001 has 4 divisors (see below), whose sum is σ = 733866672. Its totient is φ = 366933332.

The previous prime is 550399951. The next prime is 550400003. The reversal of 550400001 is 100004055.

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 550400001 - 2⁶ = 550399937 is a prime.

It is a super-2 number, since 2×550400001² = 605880322201600002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (550400003) 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, 91733331 + ... + 91733336.

It is an arithmetic number, because the mean of its divisors is an integer number (183466668).

Almost surely, 2^550400001 is an apocalyptic number.

It is an amenable number.

550400001 is a deficient number, since it is larger than the sum of its proper divisors (183466671).

550400001 is a wasteful number, since it uses less digits than its factorization.

550400001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183466670.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 550400001 is about 23460.6052990966. The cubic root of 550400001 is about 819.5198463036.

Adding to 550400001 its reverse (100004055), we get a palindrome (650404056).

The spelling of 550400001 in words is "five hundred fifty million, four hundred thousand, one".