51670953 has 20 divisors (see below), whose sum is σ = 79852740. Its totient is φ = 33257952.

The previous prime is 51670909. The next prime is 51670963. The reversal of 51670953 is 35907615.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30437289 + 21233664 = 5517^2 + 4608^2 .

It is not a de Polignac number, because 51670953 - 2¹⁴ = 51654569 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51670963) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8650 + ... + 13347.

It is an arithmetic number, because the mean of its divisors is an integer number (3992637).

Almost surely, 2^51670953 is an apocalyptic number.

It is an amenable number.

51670953 is a deficient number, since it is larger than the sum of its proper divisors (28181787).

51670953 is a wasteful number, since it uses less digits than its factorization.

51670953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22038 (or 22029 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 51670953 is about 7188.2510390219. The cubic root of 51670953 is about 372.4621597223.

The spelling of 51670953 in words is "fifty-one million, six hundred seventy thousand, nine hundred fifty-three".