51230402 has 16 divisors (see below), whose sum is σ = 79156224. Its totient is φ = 24852000.

The previous prime is 51230393. The next prime is 51230419. The reversal of 51230402 is 20403215.

51230402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14027 + ... + 17297.

It is an arithmetic number, because the mean of its divisors is an integer number (4947264).

Almost surely, 2^51230402 is an apocalyptic number.

51230402 is a deficient number, since it is larger than the sum of its proper divisors (27925822).

51230402 is a wasteful number, since it uses less digits than its factorization.

51230402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 51230402 is about 7157.5416170638. The cubic root of 51230402 is about 371.4005888048.

Adding to 51230402 its reverse (20403215), we get a palindrome (71633617).

The spelling of 51230402 in words is "fifty-one million, two hundred thirty thousand, four hundred two".