51451360 has 24 divisors (see below), whose sum is σ = 121554216. Its totient is φ = 20580480.

The previous prime is 51451327. The next prime is 51451369. The reversal of 51451360 is 6315415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51451369) 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, 160626 + ... + 160945.

It is an arithmetic number, because the mean of its divisors is an integer number (5064759).

Almost surely, 2^51451360 is an apocalyptic number.

It is an amenable number.

51451360 is an abundant number, since it is smaller than the sum of its proper divisors (70102856).

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

51451360 is a wasteful number, since it uses less digits than its factorization.

51451360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321586 (or 321578 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 51451360 is about 7172.9603372666. The cubic root of 51451360 is about 371.9337763180.

Adding to 51451360 its reverse (6315415), we get a palindrome (57766775).

The spelling of 51451360 in words is "fifty-one million, four hundred fifty-one thousand, three hundred sixty".