53178345 has 48 divisors (see below), whose sum is σ = 102503232. Its totient is φ = 25284480.

The previous prime is 53178259. The next prime is 53178371. The reversal of 53178345 is 54387135.

53178345 is a `hidden beast` number, since 531 + 7 + 83 + 45 = 666.

It is not a de Polignac number, because 53178345 - 2⁸ = 53178089 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25222 + ... + 27248.

It is an arithmetic number, because the mean of its divisors is an integer number (2135484).

Almost surely, 2^53178345 is an apocalyptic number.

53178345 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

53178345 is a deficient number, since it is larger than the sum of its proper divisors (49324887).

53178345 is a wasteful number, since it uses less digits than its factorization.

53178345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102 (or 2099 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 53178345 is about 7292.3483871795. The cubic root of 53178345 is about 376.0494337638.

The spelling of 53178345 in words is "fifty-three million, one hundred seventy-eight thousand, three hundred forty-five".