55875247 has 2 divisors, whose sum is σ = 55875248. Its totient is φ = 55875246.

The previous prime is 55875233. The next prime is 55875283. The reversal of 55875247 is 74257855.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55875247 is a prime.

It is a super-3 number, since 3×55875247³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55875227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27937623 + 27937624.

It is an arithmetic number, because the mean of its divisors is an integer number (27937624).

Almost surely, 2^55875247 is an apocalyptic number.

55875247 is a deficient number, since it is larger than the sum of its proper divisors (1).

55875247 is an equidigital number, since it uses as much as digits as its factorization.

55875247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 392000, while the sum is 43.

The square root of 55875247 is about 7474.9747156763. The cubic root of 55875247 is about 382.3019254413.

The spelling of 55875247 in words is "fifty-five million, eight hundred seventy-five thousand, two hundred forty-seven".