51799800 has 192 divisors, whose sum is σ = 179676000. Its totient is φ = 12257280.

The previous prime is 51799793. The next prime is 51799807. The reversal of 51799800 is 899715.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51799793) and next prime (51799807).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51799807) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 226086 + ... + 226314.

Almost surely, 2^51799800 is an apocalyptic number.

51799800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51799800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89838000).

51799800 is an abundant number, since it is smaller than the sum of its proper divisors (127876200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51799800 is a wasteful number, since it uses less digits than its factorization.

51799800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 51799800 is about 7197.2077919149. The cubic root of 51799800 is about 372.7714940412.

The spelling of 51799800 in words is "fifty-one million, seven hundred ninety-nine thousand, eight hundred".