245178223 has 4 divisors (see below), whose sum is σ = 258082360. Its totient is φ = 232274088.

The previous prime is 245178181. The next prime is 245178251. The reversal of 245178223 is 322871542.

It is a happy number.

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

It is not a de Polignac number, because 245178223 - 2²⁵ = 211623791 is a prime.

It is a super-2 number, since 2×245178223² = 120224722066875458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245178253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6452040 + ... + 6452077.

It is an arithmetic number, because the mean of its divisors is an integer number (64520590).

Almost surely, 2^245178223 is an apocalyptic number.

245178223 is a deficient number, since it is larger than the sum of its proper divisors (12904137).

245178223 is a wasteful number, since it uses less digits than its factorization.

245178223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12904136.

The product of its digits is 26880, while the sum is 34.

The square root of 245178223 is about 15658.1679324243. The cubic root of 245178223 is about 625.8841655722.

The spelling of 245178223 in words is "two hundred forty-five million, one hundred seventy-eight thousand, two hundred twenty-three".