55525507 has 2 divisors, whose sum is σ = 55525508. Its totient is φ = 55525506.

The previous prime is 55525499. The next prime is 55525511. The reversal of 55525507 is 70552555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55525507 - 2³ = 55525499 is a prime.

It is not a weakly prime, because it can be changed into another prime (55525537) 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, 27762753 + 27762754.

It is an arithmetic number, because the mean of its divisors is an integer number (27762754).

Almost surely, 2^55525507 is an apocalyptic number.

55525507 is a deficient number, since it is larger than the sum of its proper divisors (1).

55525507 is an equidigital number, since it uses as much as digits as its factorization.

55525507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43750, while the sum is 34.

The square root of 55525507 is about 7451.5439339777. The cubic root of 55525507 is about 381.5026077587.

It can be divided in two parts, 555 and 25507, that added together give a palindrome (26062).

The spelling of 55525507 in words is "fifty-five million, five hundred twenty-five thousand, five hundred seven".