5157998 has 16 divisors (see below), whose sum is σ = 8084880. Its totient is φ = 2464896.

The previous prime is 5157991. The next prime is 5158001. The reversal of 5157998 is 8997515.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5157991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6161 + ... + 6947.

It is an arithmetic number, because the mean of its divisors is an integer number (505305).

Almost surely, 2^5157998 is an apocalyptic number.

5157998 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

5157998 is a deficient number, since it is larger than the sum of its proper divisors (2926882).

5157998 is a wasteful number, since it uses less digits than its factorization.

5157998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931.

The product of its digits is 113400, while the sum is 44.

The square root of 5157998 is about 2271.1226298903. The cubic root of 5157998 is about 172.7801008393.

The spelling of 5157998 in words is "five million, one hundred fifty-seven thousand, nine hundred ninety-eight".