51147634 has 4 divisors (see below), whose sum is σ = 76721454. Its totient is φ = 25573816.

The previous prime is 51147589. The next prime is 51147659. The reversal of 51147634 is 43674115.

51147634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43674115 = 5 ⋅8734823.

It can be written as a sum of positive squares in only one way, i.e., 30217009 + 20930625 = 5497^2 + 4575^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51147596 and 51147605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12786907 + ... + 12786910.

Almost surely, 2^51147634 is an apocalyptic number.

51147634 is a deficient number, since it is larger than the sum of its proper divisors (25573820).

51147634 is a wasteful number, since it uses less digits than its factorization.

51147634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25573819.

The product of its digits is 10080, while the sum is 31.

The square root of 51147634 is about 7151.7574064002. The cubic root of 51147634 is about 371.2004690049.

The spelling of 51147634 in words is "fifty-one million, one hundred forty-seven thousand, six hundred thirty-four".