53998817 has 16 divisors (see below), whose sum is σ = 61482240. Its totient is φ = 47109888.

The previous prime is 53998811. The next prime is 53998823. The reversal of 53998817 is 71889935.

It is an interprime number because it is at equal distance from previous prime (53998811) and next prime (53998823).

It is a cyclic number.

It is not a de Polignac number, because 53998817 - 2⁴ = 53998801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53998811) 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, 13403 + ... + 16959.

It is an arithmetic number, because the mean of its divisors is an integer number (3842640).

Almost surely, 2^53998817 is an apocalyptic number.

It is an amenable number.

53998817 is a deficient number, since it is larger than the sum of its proper divisors (7483423).

53998817 is a wasteful number, since it uses less digits than its factorization.

53998817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3640.

The product of its digits is 544320, while the sum is 50.

The square root of 53998817 is about 7348.3887349541. The cubic root of 53998817 is about 377.9735547879.

The spelling of 53998817 in words is "fifty-three million, nine hundred ninety-eight thousand, eight hundred seventeen".