51645234 has 8 divisors (see below), whose sum is σ = 103290480. Its totient is φ = 17215076.

The previous prime is 51645233. The next prime is 51645241. The reversal of 51645234 is 43254615.

It is a sphenic number, since it is the product of 3 distinct primes.

51645234 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (51645233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4303764 + ... + 4303775.

It is an arithmetic number, because the mean of its divisors is an integer number (12911310).

Almost surely, 2^51645234 is an apocalyptic number.

51645234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51645234 is a wasteful number, since it uses less digits than its factorization.

51645234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8607544.

The product of its digits is 14400, while the sum is 30.

The square root of 51645234 is about 7186.4618554613. The cubic root of 51645234 is about 372.4003523075.

Adding to 51645234 its reverse (43254615), we get a palindrome (94899849).

The spelling of 51645234 in words is "fifty-one million, six hundred forty-five thousand, two hundred thirty-four".