172661053 has 2 divisors, whose sum is σ = 172661054. Its totient is φ = 172661052.

The previous prime is 172661029. The next prime is 172661059. The reversal of 172661053 is 350166271.

172661053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101646724 + 71014329 = 10082^2 + 8427^2 .

It is a cyclic number.

It is not a de Polignac number, because 172661053 - 2¹³ = 172652861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172661059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86330526 + 86330527.

It is an arithmetic number, because the mean of its divisors is an integer number (86330527).

Almost surely, 2^172661053 is an apocalyptic number.

It is an amenable number.

172661053 is a deficient number, since it is larger than the sum of its proper divisors (1).

172661053 is an equidigital number, since it uses as much as digits as its factorization.

172661053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 172661053 is about 13140.0552890770. The cubic root of 172661053 is about 556.8413295282.

The spelling of 172661053 in words is "one hundred seventy-two million, six hundred sixty-one thousand, fifty-three".