245172345 has 32 divisors (see below), whose sum is σ = 429594624. Its totient is φ = 118411200.

The previous prime is 245172331. The next prime is 245172377. The reversal of 245172345 is 543271542.

245172345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 245172345 - 2⁷ = 245172217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41974 + ... + 47456.

It is an arithmetic number, because the mean of its divisors is an integer number (13424832).

Almost surely, 2^245172345 is an apocalyptic number.

It is an amenable number.

245172345 is a deficient number, since it is larger than the sum of its proper divisors (184422279).

245172345 is a wasteful number, since it uses less digits than its factorization.

245172345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5773.

The product of its digits is 33600, while the sum is 33.

The square root of 245172345 is about 15657.9802337339. The cubic root of 245172345 is about 625.8791638004.

It can be divided in two parts, 24517 and 2345, that added together give a palindrome (26862).

The spelling of 245172345 in words is "two hundred forty-five million, one hundred seventy-two thousand, three hundred forty-five".