51510464 has 28 divisors (see below), whose sum is σ = 103458264. Its totient is φ = 25442304.

The previous prime is 51510461. The next prime is 51510469. The reversal of 51510464 is 46401515.

It is not an unprimeable number, because it can be changed into a prime (51510461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464 + ... + 10160.

It is an arithmetic number, because the mean of its divisors is an integer number (3694938).

Almost surely, 2^51510464 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 51510464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51729132).

51510464 is an abundant number, since it is smaller than the sum of its proper divisors (51947800).

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

51510464 is an equidigital number, since it uses as much as digits as its factorization.

51510464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9792 (or 9782 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 51510464 is about 7177.0790716001. The cubic root of 51510464 is about 372.0761396545.

Adding to 51510464 its reverse (46401515), we get a palindrome (97911979).

The spelling of 51510464 in words is "fifty-one million, five hundred ten thousand, four hundred sixty-four".