55252505 has 16 divisors (see below), whose sum is σ = 82664064. Its totient is φ = 34442880.

The previous prime is 55252471. The next prime is 55252529. The reversal of 55252505 is 50525255.

It is a happy number.

It is not a de Polignac number, because 55252505 - 2⁶ = 55252441 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71372 + ... + 72141.

It is an arithmetic number, because the mean of its divisors is an integer number (5166504).

Almost surely, 2^55252505 is an apocalyptic number.

55252505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55252505 is a deficient number, since it is larger than the sum of its proper divisors (27411559).

55252505 is a wasteful number, since it uses less digits than its factorization.

55252505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143536.

The product of its (nonzero) digits is 12500, while the sum is 29.

The square root of 55252505 is about 7433.2028762842. The cubic root of 55252505 is about 380.8763362113.

It can be divided in two parts, 5525250 and 5, that added together give a palindrome (5525255).

The spelling of 55252505 in words is "fifty-five million, two hundred fifty-two thousand, five hundred five".