55776529 has 2 divisors, whose sum is σ = 55776530. Its totient is φ = 55776528.

The previous prime is 55776527. The next prime is 55776551. The reversal of 55776529 is 92567755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50126400 + 5650129 = 7080^2 + 2377^2 .

It is a cyclic number.

It is not a de Polignac number, because 55776529 - 2¹ = 55776527 is a prime.

It is a super-2 number, since 2×55776529² = 6222042374575682, which contains 22 as substring.

Together with 55776527, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55776521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27888264 + 27888265.

It is an arithmetic number, because the mean of its divisors is an integer number (27888265).

Almost surely, 2^55776529 is an apocalyptic number.

It is an amenable number.

55776529 is a deficient number, since it is larger than the sum of its proper divisors (1).

55776529 is an equidigital number, since it uses as much as digits as its factorization.

55776529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 661500, while the sum is 46.

The square root of 55776529 is about 7468.3685634816. The cubic root of 55776529 is about 382.0766478142.

The spelling of 55776529 in words is "fifty-five million, seven hundred seventy-six thousand, five hundred twenty-nine".