551610010601 has 4 divisors (see below), whose sum is σ = 594041549892. Its totient is φ = 509178471312.

The previous prime is 551610010573. The next prime is 551610010603. The reversal of 551610010601 is 106010016155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 106010016155 = 5 ⋅21202003231.

It can be written as a sum of positive squares in 2 ways, for example, as 151028613376 + 400581397225 = 388624^2 + 632915^2 .

It is a cyclic number.

It is not a de Polignac number, because 551610010601 - 2³⁴ = 534430141417 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 (551610010603) 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, 21215769626 + ... + 21215769651.

It is an arithmetic number, because the mean of its divisors is an integer number (148510387473).

Almost surely, 2^551610010601 is an apocalyptic number.

It is an amenable number.

551610010601 is a deficient number, since it is larger than the sum of its proper divisors (42431539291).

551610010601 is a wasteful number, since it uses less digits than its factorization.

551610010601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42431539290.

The product of its (nonzero) digits is 900, while the sum is 26.

Adding to 551610010601 its reverse (106010016155), we get a palindrome (657620026756).

The spelling of 551610010601 in words is "five hundred fifty-one billion, six hundred ten million, ten thousand, six hundred one".