51670733 has 4 divisors (see below), whose sum is σ = 51685920. Its totient is φ = 51655548.

The previous prime is 51670699. The next prime is 51670753. The reversal of 51670733 is 33707615.

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 51670733 - 2¹⁸ = 51408589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51670733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51670753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128 + ... + 10166.

It is an arithmetic number, because the mean of its divisors is an integer number (12921480).

Almost surely, 2^51670733 is an apocalyptic number.

It is an amenable number.

51670733 is a deficient number, since it is larger than the sum of its proper divisors (15187).

51670733 is a wasteful number, since it uses less digits than its factorization.

51670733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15186.

The product of its (nonzero) digits is 13230, while the sum is 32.

The square root of 51670733 is about 7188.2357362568. The cubic root of 51670733 is about 372.4616311095.

The spelling of 51670733 in words is "fifty-one million, six hundred seventy thousand, seven hundred thirty-three".