245220043 has 4 divisors (see below), whose sum is σ = 255881808. Its totient is φ = 234558280.

The previous prime is 245220037. The next prime is 245220049. The reversal of 245220043 is 340022542.

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

It is an interprime number because it is at equal distance from previous prime (245220037) and next prime (245220049).

It is a cyclic number.

It is not a de Polignac number, because 245220043 - 2⁵ = 245220011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 245219996 and 245220023.

It is not an unprimeable number, because it can be changed into a prime (245220049) 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, 5330848 + ... + 5330893.

It is an arithmetic number, because the mean of its divisors is an integer number (63970452).

Almost surely, 2^245220043 is an apocalyptic number.

245220043 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

245220043 is a deficient number, since it is larger than the sum of its proper divisors (10661765).

245220043 is a wasteful number, since it uses less digits than its factorization.

245220043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10661764.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 245220043 is about 15659.5032807557. The cubic root of 245220043 is about 625.9197491943.

Adding to 245220043 its reverse (340022542), we get a palindrome (585242585).

The spelling of 245220043 in words is "two hundred forty-five million, two hundred twenty thousand, forty-three".