55224625 has 8 divisors (see below), whose sum is σ = 68920488. Its totient is φ = 44179600.

The previous prime is 55224623. The next prime is 55224629. The reversal of 55224625 is 52642255.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13905441 + 41319184 = 3729^2 + 6428^2 .

It is not a de Polignac number, because 55224625 - 2¹ = 55224623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55224623) 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, 220774 + ... + 221023.

It is an arithmetic number, because the mean of its divisors is an integer number (8615061).

Almost surely, 2^55224625 is an apocalyptic number.

It is an amenable number.

55224625 is a deficient number, since it is larger than the sum of its proper divisors (13695863).

55224625 is an equidigital number, since it uses as much as digits as its factorization.

55224625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441812 (or 441802 counting only the distinct ones).

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

The square root of 55224625 is about 7431.3272704141. The cubic root of 55224625 is about 380.8122629847.

The spelling of 55224625 in words is "fifty-five million, two hundred twenty-four thousand, six hundred twenty-five".