51451460 has 48 divisors (see below), whose sum is σ = 115831296. Its totient is φ = 19147392.

The previous prime is 51451459. The next prime is 51451471. The reversal of 51451460 is 6415415.

It is a super-2 number, since 2×51451460² = 5294505472263200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15509 + ... + 18531.

It is an arithmetic number, because the mean of its divisors is an integer number (2413152).

Almost surely, 2^51451460 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 51451460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57915648).

51451460 is an abundant number, since it is smaller than the sum of its proper divisors (64379836).

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

51451460 is a wasteful number, since it uses less digits than its factorization.

51451460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3092 (or 3090 counting only the distinct ones).

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

The square root of 51451460 is about 7172.9673078859. The cubic root of 51451460 is about 371.9340172793.

Adding to 51451460 its reverse (6415415), we get a palindrome (57866875).

The spelling of 51451460 in words is "fifty-one million, four hundred fifty-one thousand, four hundred sixty".