53720885 has 8 divisors (see below), whose sum is σ = 67858080. Its totient is φ = 40714704.

The previous prime is 53720839. The next prime is 53720899. The reversal of 53720885 is 58802735.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53720885 is a prime.

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, 282647 + ... + 282836.

It is an arithmetic number, because the mean of its divisors is an integer number (8482260).

Almost surely, 2^53720885 is an apocalyptic number.

It is an amenable number.

53720885 is a deficient number, since it is larger than the sum of its proper divisors (14137195).

53720885 is a wasteful number, since it uses less digits than its factorization.

53720885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565507.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 53720885 is about 7329.4532538246. The cubic root of 53720885 is about 377.3239621889.

The spelling of 53720885 in words is "fifty-three million, seven hundred twenty thousand, eight hundred eighty-five".