51750397 has 8 divisors (see below), whose sum is σ = 54902016. Its totient is φ = 48610752.

The previous prime is 51750379. The next prime is 51750401. The reversal of 51750397 is 79305715.

It is a happy number.

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

It is not a de Polignac number, because 51750397 - 2¹¹ = 51748349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51750367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6868 + ... + 12274.

It is an arithmetic number, because the mean of its divisors is an integer number (6862752).

Almost surely, 2^51750397 is an apocalyptic number.

It is an amenable number.

51750397 is a deficient number, since it is larger than the sum of its proper divisors (3151619).

51750397 is a wasteful number, since it uses less digits than its factorization.

51750397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5987.

The product of its (nonzero) digits is 33075, while the sum is 37.

The square root of 51750397 is about 7193.7748783236. The cubic root of 51750397 is about 372.6529486166.

The spelling of 51750397 in words is "fifty-one million, seven hundred fifty thousand, three hundred ninety-seven".