53681908 has 24 divisors (see below), whose sum is σ = 112033152. Its totient is φ = 22005984.

The previous prime is 53681899. The next prime is 53681933. The reversal of 53681908 is 80918635.

It is a happy number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 41035 + ... + 42322.

It is an arithmetic number, because the mean of its divisors is an integer number (4668048).

Almost surely, 2^53681908 is an apocalyptic number.

It is an amenable number.

53681908 is an abundant number, since it is smaller than the sum of its proper divisors (58351244).

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

53681908 is a wasteful number, since it uses less digits than its factorization.

53681908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83391 (or 83389 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 53681908 is about 7326.7938417837. The cubic root of 53681908 is about 377.2326847502.

The spelling of 53681908 in words is "fifty-three million, six hundred eighty-one thousand, nine hundred eight".