51044633 has 4 divisors (see below), whose sum is σ = 51234660. Its totient is φ = 50854608.

The previous prime is 51044629. The next prime is 51044639. The reversal of 51044633 is 33644015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21418384 + 29626249 = 4628^2 + 5443^2 .

It is a cyclic number.

It is not a de Polignac number, because 51044633 - 2² = 51044629 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51044639) 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, 94610 + ... + 95147.

It is an arithmetic number, because the mean of its divisors is an integer number (12808665).

Almost surely, 2^51044633 is an apocalyptic number.

It is an amenable number.

51044633 is a deficient number, since it is larger than the sum of its proper divisors (190027).

51044633 is a wasteful number, since it uses less digits than its factorization.

51044633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190026.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 51044633 is about 7144.5526801893. The cubic root of 51044633 is about 370.9511273087.

Adding to 51044633 its reverse (33644015), we get a palindrome (84688648).

The spelling of 51044633 in words is "fifty-one million, forty-four thousand, six hundred thirty-three".