245222143 has 4 divisors (see below), whose sum is σ = 248676048. Its totient is φ = 241768240.

The previous prime is 245222123. The next prime is 245222147. The reversal of 245222143 is 341222542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245222143 - 2¹³ = 245213951 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 (245222147) 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, 1726846 + ... + 1726987.

It is an arithmetic number, because the mean of its divisors is an integer number (62169012).

Almost surely, 2^245222143 is an apocalyptic number.

245222143 is a deficient number, since it is larger than the sum of its proper divisors (3453905).

245222143 is an equidigital number, since it uses as much as digits as its factorization.

245222143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453904.

The product of its digits is 3840, while the sum is 25.

The square root of 245222143 is about 15659.5703325474. The cubic root of 245222143 is about 625.9215359266.

Adding to 245222143 its reverse (341222542), we get a palindrome (586444685).

The spelling of 245222143 in words is "two hundred forty-five million, two hundred twenty-two thousand, one hundred forty-three".