51423430 has 16 divisors (see below), whose sum is σ = 94820544. Its totient is φ = 20067520.

The previous prime is 51423413. The next prime is 51423431. The reversal of 51423430 is 3432415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51423431) 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, 62302 + ... + 63121.

It is an arithmetic number, because the mean of its divisors is an integer number (5926284).

Almost surely, 2^51423430 is an apocalyptic number.

51423430 is a deficient number, since it is larger than the sum of its proper divisors (43397114).

51423430 is a wasteful number, since it uses less digits than its factorization.

51423430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125471.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 51423430 is about 7171.0131780663. The cubic root of 51423430 is about 371.8664636131.

Adding to 51423430 its reverse (3432415), we get a palindrome (54855845).

The spelling of 51423430 in words is "fifty-one million, four hundred twenty-three thousand, four hundred thirty".