51651434 has 8 divisors (see below), whose sum is σ = 77621988. Its totient is φ = 25777440.

The previous prime is 51651421. The next prime is 51651437. The reversal of 51651434 is 43415615.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 46199209 + 5452225 = 6797^2 + 2335^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 51651397 and 51651406.

It is not an unprimeable number, because it can be changed into a prime (51651437) by changing a digit.

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, 22787 + ... + 24950.

Almost surely, 2^51651434 is an apocalyptic number.

51651434 is a deficient number, since it is larger than the sum of its proper divisors (25970554).

51651434 is a wasteful number, since it uses less digits than its factorization.

51651434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48280.

The product of its digits is 7200, while the sum is 29.

The square root of 51651434 is about 7186.8932091690. The cubic root of 51651434 is about 372.4152539071.

The spelling of 51651434 in words is "fifty-one million, six hundred fifty-one thousand, four hundred thirty-four".