55252445 has 4 divisors (see below), whose sum is σ = 66302940. Its totient is φ = 44201952.

The previous prime is 55252441. The next prime is 55252469. The reversal of 55252445 is 54425255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54425255 = 5 ⋅10885051.

It can be written as a sum of positive squares in 2 ways, for example, as 7628644 + 47623801 = 2762^2 + 6901^2 .

It is a cyclic number.

It is not a de Polignac number, because 55252445 - 2² = 55252441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55252441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5525240 + ... + 5525249.

It is an arithmetic number, because the mean of its divisors is an integer number (16575735).

Almost surely, 2^55252445 is an apocalyptic number.

It is an amenable number.

55252445 is a deficient number, since it is larger than the sum of its proper divisors (11050495).

55252445 is a wasteful number, since it uses less digits than its factorization.

55252445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11050494.

The product of its digits is 40000, while the sum is 32.

The square root of 55252445 is about 7433.1988403379. The cubic root of 55252445 is about 380.8761983437.

The spelling of 55252445 in words is "fifty-five million, two hundred fifty-two thousand, four hundred forty-five".