55250515 has 4 divisors (see below), whose sum is σ = 66300624. Its totient is φ = 44200408.

The previous prime is 55250513. The next prime is 55250519. The reversal of 55250515 is 51505255.

It is a happy number.

55250515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55250515 - 2¹ = 55250513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55250513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5525047 + ... + 5525056.

It is an arithmetic number, because the mean of its divisors is an integer number (16575156).

Almost surely, 2^55250515 is an apocalyptic number.

55250515 is a deficient number, since it is larger than the sum of its proper divisors (11050109).

55250515 is a wasteful number, since it uses less digits than its factorization.

55250515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11050108.

The product of its (nonzero) digits is 6250, while the sum is 28.

The square root of 55250515 is about 7433.0690162274. The cubic root of 55250515 is about 380.8717635498.

The spelling of 55250515 in words is "fifty-five million, two hundred fifty thousand, five hundred fifteen".