172553959 has 2 divisors, whose sum is σ = 172553960. Its totient is φ = 172553958.

The previous prime is 172553957. The next prime is 172553963. The reversal of 172553959 is 959355271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172553959 - 2¹ = 172553957 is a prime.

Together with 172553957, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172553957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86276979 + 86276980.

It is an arithmetic number, because the mean of its divisors is an integer number (86276980).

Almost surely, 2^172553959 is an apocalyptic number.

172553959 is a deficient number, since it is larger than the sum of its proper divisors (1).

172553959 is an equidigital number, since it uses as much as digits as its factorization.

172553959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 425250, while the sum is 46.

The square root of 172553959 is about 13135.9795599719. The cubic root of 172553959 is about 556.7261777166.

The spelling of 172553959 in words is "one hundred seventy-two million, five hundred fifty-three thousand, nine hundred fifty-nine".