2551332101 has 4 divisors (see below), whose sum is σ = 2639309100. Its totient is φ = 2463355104.

The previous prime is 2551332079. The next prime is 2551332139. The reversal of 2551332101 is 1012331552.

It is a happy number.

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 1810077025 + 741255076 = 42545^2 + 27226^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551332101 - 2⁶ = 2551332037 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 (2551332191) 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, 43988456 + ... + 43988513.

It is an arithmetic number, because the mean of its divisors is an integer number (659827275).

Almost surely, 2^2551332101 is an apocalyptic number.

It is an amenable number.

2551332101 is a deficient number, since it is larger than the sum of its proper divisors (87976999).

2551332101 is an equidigital number, since it uses as much as digits as its factorization.

2551332101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87976998.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 2551332101 is about 50510.7127350229. The cubic root of 2551332101 is about 1366.4350637147.

Adding to 2551332101 its reverse (1012331552), we get a palindrome (3563663653).

The spelling of 2551332101 in words is "two billion, five hundred fifty-one million, three hundred thirty-two thousand, one hundred one".