55237565 has 8 divisors (see below), whose sum is σ = 66629688. Its totient is φ = 43960320.

The previous prime is 55237531. The next prime is 55237571. The reversal of 55237565 is 56573255.

It can be written as a sum of positive squares in 4 ways, for example, as 47524 + 55190041 = 218^2 + 7429^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55237565 - 2¹⁰ = 55236541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27656 + ... + 29585.

It is an arithmetic number, because the mean of its divisors is an integer number (8328711).

Almost surely, 2^55237565 is an apocalyptic number.

It is an amenable number.

55237565 is a deficient number, since it is larger than the sum of its proper divisors (11392123).

55237565 is a wasteful number, since it uses less digits than its factorization.

55237565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57439.

The product of its digits is 157500, while the sum is 38.

The square root of 55237565 is about 7432.1978579691. The cubic root of 55237565 is about 380.8420041002.

The spelling of 55237565 in words is "fifty-five million, two hundred thirty-seven thousand, five hundred sixty-five".