55224515 has 8 divisors (see below), whose sum is σ = 66449328. Its totient is φ = 44059680.

The previous prime is 55224511. The next prime is 55224529. The reversal of 55224515 is 51542255.

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

It is not a de Polignac number, because 55224515 - 2² = 55224511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55224511) 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, 12941 + ... + 16670.

It is an arithmetic number, because the mean of its divisors is an integer number (8306166).

Almost surely, 2^55224515 is an apocalyptic number.

55224515 is a deficient number, since it is larger than the sum of its proper divisors (11224813).

55224515 is a wasteful number, since it uses less digits than its factorization.

55224515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29989.

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

The square root of 55224515 is about 7431.3198693099. The cubic root of 55224515 is about 380.8120101423.

The spelling of 55224515 in words is "fifty-five million, two hundred twenty-four thousand, five hundred fifteen".