550403256401 has 4 divisors (see below), whose sum is σ = 562113964032. Its totient is φ = 538692548772.

The previous prime is 550403256317. The next prime is 550403256421. The reversal of 550403256401 is 104652304055.

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 550403256401 - 2¹⁴ = 550403240017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (550403256421) 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, 5855353745 + ... + 5855353838.

It is an arithmetic number, because the mean of its divisors is an integer number (140528491008).

Almost surely, 2^550403256401 is an apocalyptic number.

It is an amenable number.

550403256401 is a deficient number, since it is larger than the sum of its proper divisors (11710707631).

550403256401 is a wasteful number, since it uses less digits than its factorization.

550403256401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11710707630.

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 550403256401 in words is "five hundred fifty billion, four hundred three million, two hundred fifty-six thousand, four hundred one".