53639400 has 48 divisors (see below), whose sum is σ = 166284000. Its totient is φ = 14303680.

The previous prime is 53639389. The next prime is 53639423. The reversal of 53639400 is 493635.

It is a happy number.

53639400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 44100 + ... + 45299.

It is an arithmetic number, because the mean of its divisors is an integer number (3464250).

Almost surely, 2^53639400 is an apocalyptic number.

53639400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53639400 is an abundant number, since it is smaller than the sum of its proper divisors (112644600).

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

53639400 is a wasteful number, since it uses less digits than its factorization.

53639400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89418 (or 89409 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 53639400 is about 7323.8924077296. The cubic root of 53639400 is about 377.1330879340.

The spelling of 53639400 in words is "fifty-three million, six hundred thirty-nine thousand, four hundred".