51432230 has 16 divisors (see below), whose sum is σ = 93496464. Its totient is φ = 20368800.

The previous prime is 51432229. The next prime is 51432233. The reversal of 51432230 is 3223415.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51432233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24452 + ... + 26471.

It is an arithmetic number, because the mean of its divisors is an integer number (5843529).

Almost surely, 2^51432230 is an apocalyptic number.

51432230 is a deficient number, since it is larger than the sum of its proper divisors (42064234).

51432230 is a wasteful number, since it uses less digits than its factorization.

51432230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51031.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 51432230 is about 7171.6267331757. The cubic root of 51432230 is about 371.8876746851.

Adding to 51432230 its reverse (3223415), we get a palindrome (54655645).

The spelling of 51432230 in words is "fifty-one million, four hundred thirty-two thousand, two hundred thirty".