51836397 has 16 divisors (see below), whose sum is σ = 71453760. Its totient is φ = 33408000.

The previous prime is 51836387. The next prime is 51836401. The reversal of 51836397 is 79363815.

It is not a de Polignac number, because 51836397 - 2⁴ = 51836381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51836327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8397 + ... + 13197.

It is an arithmetic number, because the mean of its divisors is an integer number (4465860).

Almost surely, 2^51836397 is an apocalyptic number.

It is an amenable number.

51836397 is a deficient number, since it is larger than the sum of its proper divisors (19617363).

51836397 is a wasteful number, since it uses less digits than its factorization.

51836397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4924.

The product of its digits is 136080, while the sum is 42.

The square root of 51836397 is about 7199.7497873190. The cubic root of 51836397 is about 372.8592621203.

The spelling of 51836397 in words is "fifty-one million, eight hundred thirty-six thousand, three hundred ninety-seven".