51245430 has 16 divisors (see below), whose sum is σ = 122989104. Its totient is φ = 13665440.

The previous prime is 51245423. The next prime is 51245431. The reversal of 51245430 is 3454215.

It is a self number, because there is not a number n which added to its sum of digits gives 51245430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51245431) 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, 854061 + ... + 854120.

It is an arithmetic number, because the mean of its divisors is an integer number (7686819).

Almost surely, 2^51245430 is an apocalyptic number.

51245430 is an abundant number, since it is smaller than the sum of its proper divisors (71743674).

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

51245430 is a wasteful number, since it uses less digits than its factorization.

51245430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708191.

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

The square root of 51245430 is about 7158.5913418773. The cubic root of 51245430 is about 371.4369009825.

Adding to 51245430 its reverse (3454215), we get a palindrome (54699645).

The spelling of 51245430 in words is "fifty-one million, two hundred forty-five thousand, four hundred thirty".