55525505 has 16 divisors (see below), whose sum is σ = 80158080. Its totient is φ = 36070272.

The previous prime is 55525499. The next prime is 55525507. The reversal of 55525505 is 50552555.

55525505 is nontrivially palindromic in base 14.

It is not a de Polignac number, because 55525505 - 2⁴ = 55525489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55525507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41084 + ... + 42413.

It is an arithmetic number, because the mean of its divisors is an integer number (5009880).

Almost surely, 2^55525505 is an apocalyptic number.

It is an amenable number.

55525505 is a deficient number, since it is larger than the sum of its proper divisors (24632575).

55525505 is a wasteful number, since it uses less digits than its factorization.

55525505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83528.

The product of its (nonzero) digits is 31250, while the sum is 32.

The square root of 55525505 is about 7451.5437997773. The cubic root of 55525505 is about 381.5026031782.

It can be divided in two parts, 5552550 and 5, that added together give a palindrome (5552555).

The spelling of 55525505 in words is "fifty-five million, five hundred twenty-five thousand, five hundred five".