245019 has 16 divisors (see below), whose sum is σ = 352512. Its totient is φ = 151008.

The previous prime is 244997. The next prime is 245023. The reversal of 245019 is 910542.

245019 = 92² + 93² + ... + 114².

It is not a de Polignac number, because 245019 - 2⁹ = 244507 is a prime.

It is a super-2 number, since 2×245019² = 120068620722, which contains 22 as substring.

245019 is a lucky number.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 244986 and 245004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3624 + ... + 3690.

It is an arithmetic number, because the mean of its divisors is an integer number (22032).

2²⁴⁵⁰¹⁹ is an apocalyptic number.

245019 is a deficient number, since it is larger than the sum of its proper divisors (107493).

245019 is a wasteful number, since it uses less digits than its factorization.

245019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 245019 is about 494.9939393568. The cubic root of 245019 is about 62.5748649547.

The spelling of 245019 in words is "two hundred forty-five thousand, nineteen".