51487634 has 8 divisors (see below), whose sum is σ = 84252528. Its totient is φ = 23403460.

The previous prime is 51487627. The next prime is 51487649. The reversal of 51487634 is 43678415.

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, 1170152 + ... + 1170195.

It is an arithmetic number, because the mean of its divisors is an integer number (10531566).

Almost surely, 2^51487634 is an apocalyptic number.

51487634 is a deficient number, since it is larger than the sum of its proper divisors (32764894).

51487634 is a wasteful number, since it uses less digits than its factorization.

51487634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340360.

The product of its digits is 80640, while the sum is 38.

The square root of 51487634 is about 7175.4884154321. The cubic root of 51487634 is about 372.0211621291.

The spelling of 51487634 in words is "fifty-one million, four hundred eighty-seven thousand, six hundred thirty-four".