53312173 has 2 divisors, whose sum is σ = 53312174. Its totient is φ = 53312172.

The previous prime is 53312113. The next prime is 53312191. The reversal of 53312173 is 37121335.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35010889 + 18301284 = 5917^2 + 4278^2 .

It is a cyclic number.

It is not a de Polignac number, because 53312173 - 2¹³ = 53303981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53312113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26656086 + 26656087.

It is an arithmetic number, because the mean of its divisors is an integer number (26656087).

Almost surely, 2^53312173 is an apocalyptic number.

It is an amenable number.

53312173 is a deficient number, since it is larger than the sum of its proper divisors (1).

53312173 is an equidigital number, since it uses as much as digits as its factorization.

53312173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890, while the sum is 25.

The square root of 53312173 is about 7301.5185406873. The cubic root of 53312173 is about 376.3646233771.

The spelling of 53312173 in words is "fifty-three million, three hundred twelve thousand, one hundred seventy-three".