245397 has 4 divisors (see below), whose sum is σ = 327200. Its totient is φ = 163596.

The previous prime is 245389. The next prime is 245407. The reversal of 245397 is 793542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 245397 - 2³ = 245389 is a prime.

It is a super-3 number, since 3×245397³ = 44333192040557319, which contains 333 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245317) 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, 40897 + ... + 40902.

It is an arithmetic number, because the mean of its divisors is an integer number (81800).

2²⁴⁵³⁹⁷ is an apocalyptic number.

It is an amenable number.

245397 is a deficient number, since it is larger than the sum of its proper divisors (81803).

245397 is an equidigital number, since it uses as much as digits as its factorization.

245397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81802.

The product of its digits is 7560, while the sum is 30.

The square root of 245397 is about 495.3756150640. The cubic root of 245397 is about 62.6070272846.

The spelling of 245397 in words is "two hundred forty-five thousand, three hundred ninety-seven".