55975219 has 2 divisors, whose sum is σ = 55975220. Its totient is φ = 55975218.

The previous prime is 55975201. The next prime is 55975223. The reversal of 55975219 is 91257955.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55975219 - 2⁵ = 55975187 is a prime.

It is a super-2 number, since 2×55975219² = 6266450284195922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55975229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27987609 + 27987610.

It is an arithmetic number, because the mean of its divisors is an integer number (27987610).

Almost surely, 2^55975219 is an apocalyptic number.

55975219 is a deficient number, since it is larger than the sum of its proper divisors (1).

55975219 is an equidigital number, since it uses as much as digits as its factorization.

55975219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141750, while the sum is 43.

The square root of 55975219 is about 7481.6588401236. The cubic root of 55975219 is about 382.5297944809.

It can be divided in two parts, 5597 and 5219, that added together give a square (10816 = 104²).

The spelling of 55975219 in words is "fifty-five million, nine hundred seventy-five thousand, two hundred nineteen".