55215241 has 8 divisors (see below), whose sum is σ = 56475144. Its totient is φ = 53963520.

The previous prime is 55215239. The next prime is 55215263. The reversal of 55215241 is 14251255.

It can be written as a sum of positive squares in 4 ways, for example, as 4862025 + 50353216 = 2205^2 + 7096^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 55215241 - 2¹ = 55215239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55210241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12801 + ... + 16561.

It is an arithmetic number, because the mean of its divisors is an integer number (7059393).

Almost surely, 2^55215241 is an apocalyptic number.

It is an amenable number.

55215241 is a deficient number, since it is larger than the sum of its proper divisors (1259903).

55215241 is a wasteful number, since it uses less digits than its factorization.

55215241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091.

The product of its digits is 2000, while the sum is 25.

The square root of 55215241 is about 7430.6958624344. The cubic root of 55215241 is about 380.7906920237.

Adding to 55215241 its reverse (14251255), we get a palindrome (69466496).

It can be divided in two parts, 55 and 215241, that added together give a square (215296 = 464²).

The spelling of 55215241 in words is "fifty-five million, two hundred fifteen thousand, two hundred forty-one".