51663150 has 288 divisors, whose sum is σ = 183202560. Its totient is φ = 10584000.

The previous prime is 51663149. The next prime is 51663179. The reversal of 51663150 is 5136615.

It is a happy number.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 727615 + ... + 727685.

It is an arithmetic number, because the mean of its divisors is an integer number (636120).

Almost surely, 2^51663150 is an apocalyptic number.

51663150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51663150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91601280).

51663150 is an abundant number, since it is smaller than the sum of its proper divisors (131539410).

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

51663150 is a wasteful number, since it uses less digits than its factorization.

51663150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 51663150 is about 7187.7082578524. The cubic root of 51663150 is about 372.4434098679.

Adding to 51663150 its reverse (5136615), we get a palindrome (56799765).

The spelling of 51663150 in words is "fifty-one million, six hundred sixty-three thousand, one hundred fifty".