55512797 has 2 divisors, whose sum is σ = 55512798. Its totient is φ = 55512796.

The previous prime is 55512761. The next prime is 55512799. The reversal of 55512797 is 79721555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53304601 + 2208196 = 7301^2 + 1486^2 .

It is a cyclic number.

It is not a de Polignac number, because 55512797 - 2¹⁰ = 55511773 is a prime.

Together with 55512799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55512799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27756398 + 27756399.

It is an arithmetic number, because the mean of its divisors is an integer number (27756399).

Almost surely, 2^55512797 is an apocalyptic number.

It is an amenable number.

55512797 is a deficient number, since it is larger than the sum of its proper divisors (1).

55512797 is an equidigital number, since it uses as much as digits as its factorization.

55512797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110250, while the sum is 41.

The square root of 55512797 is about 7450.6910417759. The cubic root of 55512797 is about 381.4734964041.

The spelling of 55512797 in words is "fifty-five million, five hundred twelve thousand, seven hundred ninety-seven".