551122761401 has 4 divisors (see below), whose sum is σ = 551127672804. Its totient is φ = 551117850000.

The previous prime is 551122761373. The next prime is 551122761443. The reversal of 551122761401 is 104167221155.

551122761401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 230761101376 + 320361660025 = 480376^2 + 566005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551122761401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551122760401) 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, 2283350 + ... + 2513151.

It is an arithmetic number, because the mean of its divisors is an integer number (137781918201).

Almost surely, 2^551122761401 is an apocalyptic number.

It is an amenable number.

551122761401 is a deficient number, since it is larger than the sum of its proper divisors (4911403).

551122761401 is a wasteful number, since it uses less digits than its factorization.

551122761401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4911402.

The product of its (nonzero) digits is 16800, while the sum is 35.

Adding to 551122761401 its reverse (104167221155), we get a palindrome (655289982556).

The spelling of 551122761401 in words is "five hundred fifty-one billion, one hundred twenty-two million, seven hundred sixty-one thousand, four hundred one".