51303488 has 14 divisors (see below), whose sum is σ = 101805486. Its totient is φ = 25651712.

The previous prime is 51303487. The next prime is 51303491. The reversal of 51303488 is 88430315.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40857664 + 10445824 = 6392^2 + 3232^2 .

It is a super-2 number, since 2×51303488² = 5264095761932288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (51303487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400745 + ... + 400872.

Almost surely, 2^51303488 is an apocalyptic number.

It is an amenable number.

51303488 is a deficient number, since it is larger than the sum of its proper divisors (50501998).

51303488 is an equidigital number, since it uses as much as digits as its factorization.

51303488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801629 (or 801619 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 51303488 is about 7162.6453213879. The cubic root of 51303488 is about 371.5771199563.

The spelling of 51303488 in words is "fifty-one million, three hundred three thousand, four hundred eighty-eight".