51424530 has 16 divisors (see below), whose sum is σ = 123418944. Its totient is φ = 13713200.

The previous prime is 51424523. The next prime is 51424531. The reversal of 51424530 is 3542415.

It is a self number, because there is not a number n which added to its sum of digits gives 51424530.

It is not an unprimeable number, because it can be changed into a prime (51424531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 857046 + ... + 857105.

It is an arithmetic number, because the mean of its divisors is an integer number (7713684).

Almost surely, 2^51424530 is an apocalyptic number.

51424530 is an abundant number, since it is smaller than the sum of its proper divisors (71994414).

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

51424530 is a wasteful number, since it uses less digits than its factorization.

51424530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714161.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 51424530 is about 7171.0898753258. The cubic root of 51424530 is about 371.8691151294.

Adding to 51424530 its reverse (3542415), we get a palindrome (54966945).

It can be divided in two parts, 51 and 424530, that added together give a triangular number (424581 = T₉₂₁).

The spelling of 51424530 in words is "fifty-one million, four hundred twenty-four thousand, five hundred thirty".