51948173 has 4 divisors (see below), whose sum is σ = 51964608. Its totient is φ = 51931740.

The previous prime is 51948167. The next prime is 51948199. The reversal of 51948173 is 37184915.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37184915 = 5 ⋅7436983.

It is a cyclic number.

It is not a de Polignac number, because 51948173 - 2¹² = 51944077 is a prime.

It is a super-2 number, since 2×51948173² = 5397225356075858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51948103) 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, 1811 + ... + 10352.

It is an arithmetic number, because the mean of its divisors is an integer number (12991152).

Almost surely, 2^51948173 is an apocalyptic number.

It is an amenable number.

51948173 is a deficient number, since it is larger than the sum of its proper divisors (16435).

51948173 is a wasteful number, since it uses less digits than its factorization.

51948173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16434.

The product of its digits is 30240, while the sum is 38.

The square root of 51948173 is about 7207.5080991977. The cubic root of 51948173 is about 373.1270713494.

The spelling of 51948173 in words is "fifty-one million, nine hundred forty-eight thousand, one hundred seventy-three".