53178240 has 64 divisors (see below), whose sum is σ = 169511760. Its totient is φ = 14180352.

The previous prime is 53178211. The next prime is 53178241. The reversal of 53178240 is 4287135.

53178240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 53178198 and 53178207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53178241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11929 + ... + 15768.

Almost surely, 2^53178240 is an apocalyptic number.

It is an amenable number.

53178240 is an abundant number, since it is smaller than the sum of its proper divisors (116333520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53178240 is a wasteful number, since it uses less digits than its factorization.

53178240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27719 (or 27707 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 53178240 is about 7292.3411878491. The cubic root of 53178240 is about 376.0491862620.

The spelling of 53178240 in words is "fifty-three million, one hundred seventy-eight thousand, two hundred forty".