51583749 has 16 divisors (see below), whose sum is σ = 78761472. Its totient is φ = 29417328.

The previous prime is 51583747. The next prime is 51583757. The reversal of 51583749 is 94738515.

It is not a de Polignac number, because 51583749 - 2¹ = 51583747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51583749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51583747) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9642 + ... + 14004.

It is an arithmetic number, because the mean of its divisors is an integer number (4922592).

Almost surely, 2^51583749 is an apocalyptic number.

It is an amenable number.

51583749 is a deficient number, since it is larger than the sum of its proper divisors (27177723).

51583749 is a wasteful number, since it uses less digits than its factorization.

51583749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4936.

The product of its digits is 151200, while the sum is 42.

The square root of 51583749 is about 7182.1827462130. The cubic root of 51583749 is about 372.2525095063.

The spelling of 51583749 in words is "fifty-one million, five hundred eighty-three thousand, seven hundred forty-nine".