55512151 has 2 divisors, whose sum is σ = 55512152. Its totient is φ = 55512150.

The previous prime is 55512137. The next prime is 55512161. The reversal of 55512151 is 15121555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55512151 - 2⁹ = 55511639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55512161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27756075 + 27756076.

It is an arithmetic number, because the mean of its divisors is an integer number (27756076).

Almost surely, 2^55512151 is an apocalyptic number.

55512151 is a deficient number, since it is larger than the sum of its proper divisors (1).

55512151 is an equidigital number, since it uses as much as digits as its factorization.

55512151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1250, while the sum is 25.

The square root of 55512151 is about 7450.6476899663. The cubic root of 55512151 is about 381.4720166682.

The spelling of 55512151 in words is "fifty-five million, five hundred twelve thousand, one hundred fifty-one".