100519 has 2 divisors, whose sum is σ = 100520. Its totient is φ = 100518.

The previous prime is 100517. The next prime is 100523. The reversal of 100519 is 915001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100519 - 2¹ = 100517 is a prime.

It is a super-2 number, since 2×100519² = 20208138722, which contains 22 as substring.

Together with 100517, it forms a pair of twin primes.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50259 + 50260.

It is an arithmetic number, because the mean of its divisors is an integer number (50260).

2¹⁰⁰⁵¹⁹ is an apocalyptic number.

100519 is a deficient number, since it is larger than the sum of its proper divisors (1).

100519 is an equidigital number, since it uses as much as digits as its factorization.

100519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45, while the sum is 16.

The square root of 100519 is about 317.0473150809. The cubic root of 100519 is about 46.4960493040.

It can be divided in two parts, 1005 and 19, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 100519 in words is "one hundred thousand, five hundred nineteen".