51487633 has 4 divisors (see below), whose sum is σ = 51515248. Its totient is φ = 51460020.

The previous prime is 51487627. The next prime is 51487649. The reversal of 51487633 is 33678415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51487633 - 2¹⁷ = 51356561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51487592 and 51487601.

It is not an unprimeable number, because it can be changed into a prime (51427633) 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 3 ways as a sum of consecutive naturals, for example, 10791 + ... + 14812.

It is an arithmetic number, because the mean of its divisors is an integer number (12878812).

Almost surely, 2^51487633 is an apocalyptic number.

It is an amenable number.

51487633 is a deficient number, since it is larger than the sum of its proper divisors (27615).

51487633 is a wasteful number, since it uses less digits than its factorization.

51487633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27614.

The product of its digits is 60480, while the sum is 37.

The square root of 51487633 is about 7175.4883457504. The cubic root of 51487633 is about 372.0211597206.

The spelling of 51487633 in words is "fifty-one million, four hundred eighty-seven thousand, six hundred thirty-three".