51423488 has 72 divisors (see below), whose sum is σ = 108352440. Its totient is φ = 24330240.

The previous prime is 51423473. The next prime is 51423517. The reversal of 51423488 is 88432415.

It can be written as a sum of positive squares in 4 ways, for example, as 1183744 + 50239744 = 1088^2 + 7088^2 .

It is a super-2 number, since 2×51423488² = 5288750236172288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 577748 + ... + 577836.

It is an arithmetic number, because the mean of its divisors is an integer number (1504895).

Almost surely, 2^51423488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51423488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54176220).

51423488 is an abundant number, since it is smaller than the sum of its proper divisors (56928952).

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

51423488 is an equidigital number, since it uses as much as digits as its factorization.

51423488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 189 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 51423488 is about 7171.0172221241. The cubic root of 51423488 is about 371.8666034213.

The spelling of 51423488 in words is "fifty-one million, four hundred twenty-three thousand, four hundred eighty-eight".