5551512101 has 2 divisors, whose sum is σ = 5551512102. Its totient is φ = 5551512100.

The previous prime is 5551512091. The next prime is 5551512121. The reversal of 5551512101 is 1012151555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4097920225 + 1453591876 = 64015^2 + 38126^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5551512101 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5551512121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775756050 + 2775756051.

It is an arithmetic number, because the mean of its divisors is an integer number (2775756051).

Almost surely, 2^5551512101 is an apocalyptic number.

It is an amenable number.

5551512101 is a deficient number, since it is larger than the sum of its proper divisors (1).

5551512101 is an equidigital number, since it uses as much as digits as its factorization.

5551512101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1250, while the sum is 26.

The square root of 5551512101 is about 74508.4699950281. The cubic root of 5551512101 is about 1770.6678298551.

Adding to 5551512101 its reverse (1012151555), we get a palindrome (6563663656).

The spelling of 5551512101 in words is "five billion, five hundred fifty-one million, five hundred twelve thousand, one hundred one".