55434551 has 2 divisors, whose sum is σ = 55434552. Its totient is φ = 55434550.

The previous prime is 55434529. The next prime is 55434559. The reversal of 55434551 is 15543455.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55434551 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55434559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27717275 + 27717276.

It is an arithmetic number, because the mean of its divisors is an integer number (27717276).

Almost surely, 2^55434551 is an apocalyptic number.

55434551 is a deficient number, since it is larger than the sum of its proper divisors (1).

55434551 is an equidigital number, since it uses as much as digits as its factorization.

55434551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30000, while the sum is 32.

The square root of 55434551 is about 7445.4382678255. The cubic root of 55434551 is about 381.2941815321.

The spelling of 55434551 in words is "fifty-five million, four hundred thirty-four thousand, five hundred fifty-one".