51233430 has 32 divisors (see below), whose sum is σ = 127202400. Its totient is φ = 13190912.

The previous prime is 51233423. The next prime is 51233437. The reversal of 51233430 is 3433215.

It is an interprime number because it is at equal distance from previous prime (51233423) and next prime (51233437).

It is a junction number, because it is equal to n+sod(n) for n = 51233397 and 51233406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51233437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28575 + ... + 30314.

It is an arithmetic number, because the mean of its divisors is an integer number (3975075).

Almost surely, 2^51233430 is an apocalyptic number.

51233430 is an abundant number, since it is smaller than the sum of its proper divisors (75968970).

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

51233430 is a wasteful number, since it uses less digits than its factorization.

51233430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58928.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 51233430 is about 7157.7531390793. The cubic root of 51233430 is about 371.4079059367.

Adding to 51233430 its reverse (3433215), we get a palindrome (54666645).

The spelling of 51233430 in words is "fifty-one million, two hundred thirty-three thousand, four hundred thirty".