550525774621 has 4 divisors (see below), whose sum is σ = 553292236000. Its totient is φ = 547759313244.

The previous prime is 550525774583. The next prime is 550525774637. The reversal of 550525774621 is 126477525055.

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 550525774621 - 2⁷ = 550525774493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550525774661) 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, 1383230391 + ... + 1383230788.

It is an arithmetic number, because the mean of its divisors is an integer number (138323059000).

Almost surely, 2^550525774621 is an apocalyptic number.

It is an amenable number.

550525774621 is a deficient number, since it is larger than the sum of its proper divisors (2766461379).

550525774621 is a wasteful number, since it uses less digits than its factorization.

550525774621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766461378.

The product of its (nonzero) digits is 2940000, while the sum is 49.

The spelling of 550525774621 in words is "five hundred fifty billion, five hundred twenty-five million, seven hundred seventy-four thousand, six hundred twenty-one".