51403460 has 24 divisors (see below), whose sum is σ = 108160920. Its totient is φ = 20520704.

The previous prime is 51403453. The next prime is 51403511. The reversal of 51403460 is 6430415.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2515396 + 48888064 = 1586^2 + 6992^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9122 + ... + 13638.

It is an arithmetic number, because the mean of its divisors is an integer number (4506705).

Almost surely, 2^51403460 is an apocalyptic number.

It is an amenable number.

51403460 is an abundant number, since it is smaller than the sum of its proper divisors (56757460).

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

51403460 is a wasteful number, since it uses less digits than its factorization.

51403460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5095 (or 5093 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 51403460 is about 7169.6206315258. The cubic root of 51403460 is about 371.8183199635.

Adding to 51403460 its reverse (6430415), we get a palindrome (57833875).

The spelling of 51403460 in words is "fifty-one million, four hundred three thousand, four hundred sixty".