53998705 has 8 divisors (see below), whose sum is σ = 64855872. Its totient is φ = 43160688.

The previous prime is 53998691. The next prime is 53998729. The reversal of 53998705 is 50789935.

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

It is a cyclic number.

It is not a de Polignac number, because 53998705 - 2⁵ = 53998673 is a prime.

It is a Duffinian 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, 2404 + ... + 10666.

It is an arithmetic number, because the mean of its divisors is an integer number (8106984).

Almost surely, 2^53998705 is an apocalyptic number.

It is an amenable number.

53998705 is a deficient number, since it is larger than the sum of its proper divisors (10857167).

53998705 is a wasteful number, since it uses less digits than its factorization.

53998705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9575.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 53998705 is about 7348.3811142319. The cubic root of 53998705 is about 377.9732934670.

The spelling of 53998705 in words is "fifty-three million, nine hundred ninety-eight thousand, seven hundred five".