53172943 has 2 divisors, whose sum is σ = 53172944. Its totient is φ = 53172942.

The previous prime is 53172937. The next prime is 53172947. The reversal of 53172943 is 34927135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53172943 - 2¹³ = 53164751 is a prime.

It is a super-4 number, since 4×53172943⁴ (a number of 32 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53172899 and 53172908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53172947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26586471 + 26586472.

It is an arithmetic number, because the mean of its divisors is an integer number (26586472).

Almost surely, 2^53172943 is an apocalyptic number.

53172943 is a deficient number, since it is larger than the sum of its proper divisors (1).

53172943 is an equidigital number, since it uses as much as digits as its factorization.

53172943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 34.

The square root of 53172943 is about 7291.9779895444. The cubic root of 53172943 is about 376.0366999601.

The spelling of 53172943 in words is "fifty-three million, one hundred seventy-two thousand, nine hundred forty-three".