551011005061 has 4 divisors (see below), whose sum is σ = 601102914624. Its totient is φ = 500919095500.

The previous prime is 551011005059. The next prime is 551011005073. The reversal of 551011005061 is 160500110155.

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 551011005061 - 2¹ = 551011005059 is a prime.

It is a super-2 number, since 2×551011005061² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551011000061) 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, 25045954765 + ... + 25045954786.

It is an arithmetic number, because the mean of its divisors is an integer number (150275728656).

Almost surely, 2^551011005061 is an apocalyptic number.

It is an amenable number.

551011005061 is a deficient number, since it is larger than the sum of its proper divisors (50091909563).

551011005061 is a wasteful number, since it uses less digits than its factorization.

551011005061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50091909562.

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 551011005061 in words is "five hundred fifty-one billion, eleven million, five thousand, sixty-one".