145519 has 4 divisors (see below), whose sum is σ = 158760. Its totient is φ = 132280.

The previous prime is 145517. The next prime is 145531. The reversal of 145519 is 915541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 915541 = 11 ⋅83231.

It is a cyclic number.

It is not a de Polignac number, because 145519 - 2¹ = 145517 is a prime.

It is a super-2 number, since 2×145519² = 42351558722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145493 and 145502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6604 + ... + 6625.

It is an arithmetic number, because the mean of its divisors is an integer number (39690).

2¹⁴⁵⁵¹⁹ is an apocalyptic number.

145519 is a deficient number, since it is larger than the sum of its proper divisors (13241).

145519 is a wasteful number, since it uses less digits than its factorization.

145519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13240.

The product of its digits is 900, while the sum is 25.

The square root of 145519 is about 381.4695269612. The cubic root of 145519 is about 52.5984848267.

The spelling of 145519 in words is "one hundred forty-five thousand, five hundred nineteen".