51836398 has 16 divisors (see below), whose sum is σ = 81226080. Its totient is φ = 24778656.

The previous prime is 51836387. The next prime is 51836401. The reversal of 51836398 is 89363815.

It is a super-2 number, since 2×51836398² = 5374024315228808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1636 + ... + 10312.

It is an arithmetic number, because the mean of its divisors is an integer number (5076630).

Almost surely, 2^51836398 is an apocalyptic number.

51836398 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

51836398 is a deficient number, since it is larger than the sum of its proper divisors (29389682).

51836398 is a wasteful number, since it uses less digits than its factorization.

51836398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8811.

The product of its digits is 155520, while the sum is 43.

The square root of 51836398 is about 7199.7498567659. The cubic root of 51836398 is about 372.8592645179.

The spelling of 51836398 in words is "fifty-one million, eight hundred thirty-six thousand, three hundred ninety-eight".