53809620 has 48 divisors (see below), whose sum is σ = 151247040. Its totient is φ = 14294016.

The previous prime is 53809619. The next prime is 53809621. The reversal of 53809620 is 2690835.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53809619) and next prime (53809621).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53809621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15396 + ... + 18564.

It is an arithmetic number, because the mean of its divisors is an integer number (3150980).

Almost surely, 2^53809620 is an apocalyptic number.

It is an amenable number.

53809620 is an abundant number, since it is smaller than the sum of its proper divisors (97437420).

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

53809620 is a wasteful number, since it uses less digits than its factorization.

53809620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3464 (or 3462 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 53809620 is about 7335.5040726592. The cubic root of 53809620 is about 377.5315997699.

The spelling of 53809620 in words is "fifty-three million, eight hundred nine thousand, six hundred twenty".