55245251 has 4 divisors (see below), whose sum is σ = 55289400. Its totient is φ = 55201104.

The previous prime is 55245227. The next prime is 55245263. The reversal of 55245251 is 15254255.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55245251 - 2⁶ = 55245187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55245271) 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, 20141 + ... + 22718.

It is an arithmetic number, because the mean of its divisors is an integer number (13822350).

Almost surely, 2^55245251 is an apocalyptic number.

55245251 is a deficient number, since it is larger than the sum of its proper divisors (44149).

55245251 is a wasteful number, since it uses less digits than its factorization.

55245251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44148.

The product of its digits is 10000, while the sum is 29.

The square root of 55245251 is about 7432.7149144845. The cubic root of 55245251 is about 380.8596672967.

The spelling of 55245251 in words is "fifty-five million, two hundred forty-five thousand, two hundred fifty-one".