45998 has 8 divisors (see below), whose sum is σ = 69960. Its totient is φ = 22680.

The previous prime is 45989. The next prime is 46021. The reversal of 45998 is 89954.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113 + ... + 323.

It is an arithmetic number, because the mean of its divisors is an integer number (8745).

2⁴⁵⁹⁹⁸ is an apocalyptic number.

45998 is a deficient number, since it is larger than the sum of its proper divisors (23962).

45998 is a wasteful number, since it uses less digits than its factorization.

45998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322.

The product of its digits is 12960, while the sum is 35.

The square root of 45998 is about 214.4714433206. The cubic root of 45998 is about 35.8299594203.

Subtracting 45998 from its reverse (89954), we obtain a triangular number (43956 = T₂₉₆).

The spelling of 45998 in words is "forty-five thousand, nine hundred ninety-eight".