55001519 has 2 divisors, whose sum is σ = 55001520. Its totient is φ = 55001518.

The previous prime is 55001503. The next prime is 55001521. The reversal of 55001519 is 91510055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55001519 - 2⁴ = 55001503 is a prime.

It is a super-2 number, since 2×55001519² = 6050334184614722, which contains 22 as substring.

Together with 55001521, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55001539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27500759 + 27500760.

It is an arithmetic number, because the mean of its divisors is an integer number (27500760).

Almost surely, 2^55001519 is an apocalyptic number.

55001519 is a deficient number, since it is larger than the sum of its proper divisors (1).

55001519 is an equidigital number, since it uses as much as digits as its factorization.

55001519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1125, while the sum is 26.

The square root of 55001519 is about 7416.3008973477. The cubic root of 55001519 is about 380.2987470650.

The spelling of 55001519 in words is "fifty-five million, one thousand, five hundred nineteen".