55025647 has 4 divisors (see below), whose sum is σ = 55048840. Its totient is φ = 55002456.

The previous prime is 55025603. The next prime is 55025657. The reversal of 55025647 is 74652055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74652055 = 5 ⋅14930411.

It is a cyclic number.

It is not a de Polignac number, because 55025647 - 2¹⁵ = 54992879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55025657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7572 + ... + 12937.

It is an arithmetic number, because the mean of its divisors is an integer number (13762210).

Almost surely, 2^55025647 is an apocalyptic number.

55025647 is a deficient number, since it is larger than the sum of its proper divisors (23193).

55025647 is a wasteful number, since it uses less digits than its factorization.

55025647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23192.

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 55025647 is about 7417.9274059538. The cubic root of 55025647 is about 380.3543486006.

The spelling of 55025647 in words is "fifty-five million, twenty-five thousand, six hundred forty-seven".