845123455 has 8 divisors (see below), whose sum is σ = 1106343504. Its totient is φ = 614635200.

The previous prime is 845123449. The next prime is 845123473. The reversal of 845123455 is 554321548.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 845123455 - 2²⁹ = 308252543 is a prime.

It is a super-2 number, since 2×845123455² = 1428467308382274050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7682886 + ... + 7682995.

It is an arithmetic number, because the mean of its divisors is an integer number (138292938).

Almost surely, 2^845123455 is an apocalyptic number.

845123455 is a deficient number, since it is larger than the sum of its proper divisors (261220049).

845123455 is a wasteful number, since it uses less digits than its factorization.

845123455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15365897.

The product of its digits is 96000, while the sum is 37.

The square root of 845123455 is about 29071.0071204972. The cubic root of 845123455 is about 945.4532338731.

The spelling of 845123455 in words is "eight hundred forty-five million, one hundred twenty-three thousand, four hundred fifty-five".