53178623 has 4 divisors (see below), whose sum is σ = 53225208. Its totient is φ = 53132040.

The previous prime is 53178611. The next prime is 53178661. The reversal of 53178623 is 32687135.

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

It is a cyclic number.

It is not a de Polignac number, because 53178623 - 2⁴ = 53178607 is a prime.

It is a super-2 number, since 2×53178623² = 5655931888352258, 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 (53178683) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 21536 + ... + 23877.

It is an arithmetic number, because the mean of its divisors is an integer number (13306302).

Almost surely, 2^53178623 is an apocalyptic number.

53178623 is a deficient number, since it is larger than the sum of its proper divisors (46585).

53178623 is a wasteful number, since it uses less digits than its factorization.

53178623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46584.

The product of its digits is 30240, while the sum is 35.

The square root of 53178623 is about 7292.3674482297. The cubic root of 53178623 is about 376.0500890529.

The spelling of 53178623 in words is "fifty-three million, one hundred seventy-eight thousand, six hundred twenty-three".