51490383 has 32 divisors (see below), whose sum is σ = 81500160. Its totient is φ = 28304640.

The previous prime is 51490381. The next prime is 51490409. The reversal of 51490383 is 38309415.

It is not a de Polignac number, because 51490383 - 2¹ = 51490381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51490381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67641 + ... + 68397.

It is an arithmetic number, because the mean of its divisors is an integer number (2546880).

Almost surely, 2^51490383 is an apocalyptic number.

51490383 is a deficient number, since it is larger than the sum of its proper divisors (30009777).

51490383 is a wasteful number, since it uses less digits than its factorization.

51490383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 51490383 is about 7175.6799677801. The cubic root of 51490383 is about 372.0277829290.

Adding to 51490383 its reverse (38309415), we get a palindrome (89799798).

The spelling of 51490383 in words is "fifty-one million, four hundred ninety thousand, three hundred eighty-three".