51305534 has 8 divisors (see below), whose sum is σ = 87952368. Its totient is φ = 21988080.

The previous prime is 51305521. The next prime is 51305539. The reversal of 51305534 is 43550315.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51305539) 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, 1832327 + ... + 1832354.

It is an arithmetic number, because the mean of its divisors is an integer number (10994046).

Almost surely, 2^51305534 is an apocalyptic number.

51305534 is a deficient number, since it is larger than the sum of its proper divisors (36646834).

51305534 is a wasteful number, since it uses less digits than its factorization.

51305534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664690.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 51305534 is about 7162.7881442913. The cubic root of 51305534 is about 371.5820594299.

Adding to 51305534 its reverse (43550315), we get a palindrome (94855849).

The spelling of 51305534 in words is "fifty-one million, three hundred five thousand, five hundred thirty-four".