51405434 has 8 divisors (see below), whose sum is σ = 77293440. Its totient is φ = 25640956.

The previous prime is 51405413. The next prime is 51405463. The reversal of 51405434 is 43450415.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 29834 + ... + 31509.

It is an arithmetic number, because the mean of its divisors is an integer number (9661680).

Almost surely, 2^51405434 is an apocalyptic number.

51405434 is a deficient number, since it is larger than the sum of its proper divisors (25888006).

51405434 is a wasteful number, since it uses less digits than its factorization.

51405434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61764.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 51405434 is about 7169.7582943918. The cubic root of 51405434 is about 371.8230794354.

Adding to 51405434 its reverse (43450415), we get a palindrome (94855849).

The spelling of 51405434 in words is "fifty-one million, four hundred five thousand, four hundred thirty-four".