172325537 has 2 divisors, whose sum is σ = 172325538. Its totient is φ = 172325536.

The previous prime is 172325521. The next prime is 172325557. The reversal of 172325537 is 735523271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115111441 + 57214096 = 10729^2 + 7564^2 .

It is a cyclic number.

It is not a de Polignac number, because 172325537 - 2⁴ = 172325521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172325497 and 172325506.

It is not a weakly prime, because it can be changed into another prime (172325507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86162768 + 86162769.

It is an arithmetic number, because the mean of its divisors is an integer number (86162769).

Almost surely, 2^172325537 is an apocalyptic number.

It is an amenable number.

172325537 is a deficient number, since it is larger than the sum of its proper divisors (1).

172325537 is an equidigital number, since it uses as much as digits as its factorization.

172325537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44100, while the sum is 35.

The square root of 172325537 is about 13127.2821634945. The cubic root of 172325537 is about 556.4804098362.

The spelling of 172325537 in words is "one hundred seventy-two million, three hundred twenty-five thousand, five hundred thirty-seven".