245378143 has 4 divisors (see below), whose sum is σ = 245932488. Its totient is φ = 244823800.

The previous prime is 245378137. The next prime is 245378149. The reversal of 245378143 is 341873542.

It is a happy number.

245378143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341873542 = 2 ⋅170936771.

It is an interprime number because it is at equal distance from previous prime (245378137) and next prime (245378149).

It is a cyclic number.

It is not a de Polignac number, because 245378143 - 2¹⁷ = 245247071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245378149) 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, 276508 + ... + 277393.

It is an arithmetic number, because the mean of its divisors is an integer number (61483122).

Almost surely, 2^245378143 is an apocalyptic number.

245378143 is a deficient number, since it is larger than the sum of its proper divisors (554345).

245378143 is an equidigital number, since it uses as much as digits as its factorization.

245378143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554344.

The product of its digits is 80640, while the sum is 37.

The square root of 245378143 is about 15664.5505202033. The cubic root of 245378143 is about 626.0542360982.

The spelling of 245378143 in words is "two hundred forty-five million, three hundred seventy-eight thousand, one hundred forty-three".