51933905 has 8 divisors (see below), whose sum is σ = 63496872. Its totient is φ = 40763008.

The previous prime is 51933901. The next prime is 51933907. The reversal of 51933905 is 50933915.

It can be written as a sum of positive squares in 4 ways, for example, as 8162449 + 43771456 = 2857^2 + 6616^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51933905 - 2² = 51933901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51933901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97724 + ... + 98253.

It is an arithmetic number, because the mean of its divisors is an integer number (7937109).

Almost surely, 2^51933905 is an apocalyptic number.

It is an amenable number.

51933905 is a deficient number, since it is larger than the sum of its proper divisors (11562967).

51933905 is a wasteful number, since it uses less digits than its factorization.

51933905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196035.

The product of its (nonzero) digits is 18225, while the sum is 35.

The square root of 51933905 is about 7206.5182300470. The cubic root of 51933905 is about 373.0929073982.

The spelling of 51933905 in words is "fifty-one million, nine hundred thirty-three thousand, nine hundred five".