51497738 has 8 divisors (see below), whose sum is σ = 77855232. Its totient is φ = 25545996.

The previous prime is 51497729. The next prime is 51497783. The reversal of 51497738 is 83779415.

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, 101120 + ... + 101627.

It is an arithmetic number, because the mean of its divisors is an integer number (9731904).

Almost surely, 2^51497738 is an apocalyptic number.

51497738 is a deficient number, since it is larger than the sum of its proper divisors (26357494).

51497738 is a wasteful number, since it uses less digits than its factorization.

51497738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202876.

The product of its digits is 211680, while the sum is 44.

The square root of 51497738 is about 7176.1924444652. The cubic root of 51497738 is about 372.0454958423.

The spelling of 51497738 in words is "fifty-one million, four hundred ninety-seven thousand, seven hundred thirty-eight".