51302494 has 4 divisors (see below), whose sum is σ = 76953744. Its totient is φ = 25651246.

The previous prime is 51302477. The next prime is 51302507. The reversal of 51302494 is 49420315.

51302494 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.

It is a congruent number.

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, 12825622 + ... + 12825625.

It is an arithmetic number, because the mean of its divisors is an integer number (19238436).

Almost surely, 2^51302494 is an apocalyptic number.

51302494 is a deficient number, since it is larger than the sum of its proper divisors (25651250).

51302494 is a wasteful number, since it uses less digits than its factorization.

51302494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25651249.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 51302494 is about 7162.5759332799. The cubic root of 51302494 is about 371.5747201842.

The spelling of 51302494 in words is "fifty-one million, three hundred two thousand, four hundred ninety-four".