550550503001 has 4 divisors (see below), whose sum is σ = 552213797904. Its totient is φ = 548887208100.

The previous prime is 550550502989. The next prime is 550550503043. The reversal of 550550503001 is 100305055055.

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, and also an emirpimes, since its reverse is a distinct semiprime: 100305055055 = 5 ⋅20061011011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550550503001 is a prime.

It is a super-2 number, since 2×550550503001² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550550503901) 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, 831646955 + ... + 831647616.

It is an arithmetic number, because the mean of its divisors is an integer number (138053449476).

Almost surely, 2^550550503001 is an apocalyptic number.

It is an amenable number.

550550503001 is a deficient number, since it is larger than the sum of its proper divisors (1663294903).

550550503001 is a wasteful number, since it uses less digits than its factorization.

550550503001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663294902.

The product of its (nonzero) digits is 9375, while the sum is 29.

Adding to 550550503001 its reverse (100305055055), we get a palindrome (650855558056).

The spelling of 550550503001 in words is "five hundred fifty billion, five hundred fifty million, five hundred three thousand, one".