51749474 has 8 divisors (see below), whose sum is σ = 88713408. Its totient is φ = 22178340.

The previous prime is 51749461. The next prime is 51749497. The reversal of 51749474 is 47494715.

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

It is a Curzon number.

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, 1848182 + ... + 1848209.

It is an arithmetic number, because the mean of its divisors is an integer number (11089176).

Almost surely, 2^51749474 is an apocalyptic number.

51749474 is a deficient number, since it is larger than the sum of its proper divisors (36963934).

51749474 is a wasteful number, since it uses less digits than its factorization.

51749474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696400.

The product of its digits is 141120, while the sum is 41.

The square root of 51749474 is about 7193.7107253489. The cubic root of 51749474 is about 372.6507331056.

The spelling of 51749474 in words is "fifty-one million, seven hundred forty-nine thousand, four hundred seventy-four".