51633009 has 12 divisors (see below), whose sum is σ = 74644752. Its totient is φ = 34392600.

The previous prime is 51633007. The next prime is 51633017. The reversal of 51633009 is 90033615.

It is not a de Polignac number, because 51633009 - 2¹ = 51633007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51633007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15894 + ... + 18864.

It is an arithmetic number, because the mean of its divisors is an integer number (6220396).

Almost surely, 2^51633009 is an apocalyptic number.

It is an amenable number.

51633009 is a deficient number, since it is larger than the sum of its proper divisors (23011743).

51633009 is a wasteful number, since it uses less digits than its factorization.

51633009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4908 (or 4905 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 51633009 is about 7185.6112474862. The cubic root of 51633009 is about 372.3709662234.

The spelling of 51633009 in words is "fifty-one million, six hundred thirty-three thousand, nine".