55625243 has 4 divisors (see below), whose sum is σ = 56329440. Its totient is φ = 54921048.

The previous prime is 55625239. The next prime is 55625279. The reversal of 55625243 is 34252655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34252655 = 5 ⋅6850531.

It is a cyclic number.

It is not a de Polignac number, because 55625243 - 2² = 55625239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55625203) 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, 351980 + ... + 352137.

It is an arithmetic number, because the mean of its divisors is an integer number (14082360).

Almost surely, 2^55625243 is an apocalyptic number.

55625243 is a deficient number, since it is larger than the sum of its proper divisors (704197).

55625243 is an equidigital number, since it uses as much as digits as its factorization.

55625243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704196.

The product of its digits is 36000, while the sum is 32.

The square root of 55625243 is about 7458.2332358274. The cubic root of 55625243 is about 381.7308919418.

Adding to 55625243 its reverse (34252655), we get a palindrome (89877898).

The spelling of 55625243 in words is "fifty-five million, six hundred twenty-five thousand, two hundred forty-three".