55883519 has 2 divisors, whose sum is σ = 55883520.
Its totient is φ = 55883518.
The previous prime is 55883507. The next prime is 55883521. The reversal of 55883519 is 91538855.
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-55883519 is a prime.
It is a super-2 number, since 2×558835192 = 6245935391646722, which contains 22 as substring.
It is a Sophie Germain prime.
Together with 55883521, it forms a pair of twin primes.
It is a Chen prime.
It is a self number, because there is not a number n which added to its sum of digits gives 55883519.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (55883549) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27941759 + 27941760.
It is an arithmetic number, because the mean of its divisors is an integer number (27941760).
Almost surely, 255883519 is an apocalyptic number.
55883519 is a deficient number, since it is larger than the sum of its proper divisors (1).
55883519 is an equidigital number, since it uses as much as digits as its factorization.
55883519 is an evil number, because the sum of its binary digits is even.
The product of its digits is 216000, while the sum is 44.
The square root of 55883519 is about 7475.5280081075.
The cubic root of 55883519 is about 382.3207903571.
The spelling of 55883519 in words is "fifty-five million, eight hundred eighty-three thousand, five hundred nineteen".