55242265 has 16 divisors (see below), whose sum is σ = 75590928. Its totient is φ = 38393856.

The previous prime is 55242259. The next prime is 55242269. The reversal of 55242265 is 56224255.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 67081 + 55175184 = 259^2 + 7428^2 .

It is a cyclic number.

It is not a de Polignac number, because 55242265 - 2¹¹ = 55240217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55242269) 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, 23892 + ... + 26101.

It is an arithmetic number, because the mean of its divisors is an integer number (4724433).

Almost surely, 2^55242265 is an apocalyptic number.

It is an amenable number.

55242265 is a deficient number, since it is larger than the sum of its proper divisors (20348663).

55242265 is a wasteful number, since it uses less digits than its factorization.

55242265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50028.

The product of its digits is 24000, while the sum is 31.

The square root of 55242265 is about 7432.5140430409. The cubic root of 55242265 is about 380.8528053647.

The spelling of 55242265 in words is "fifty-five million, two hundred forty-two thousand, two hundred sixty-five".