172500641 has 2 divisors, whose sum is σ = 172500642. Its totient is φ = 172500640.

The previous prime is 172500631. The next prime is 172500659. The reversal of 172500641 is 146005271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169000000 + 3500641 = 13000^2 + 1871^2 .

It is a cyclic number.

It is not a de Polignac number, because 172500641 - 2²⁶ = 105391777 is a prime.

It is a super-2 number, since 2×172500641² = 59512942290821762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172500641.

It is not a weakly prime, because it can be changed into another prime (172500631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86250320 + 86250321.

It is an arithmetic number, because the mean of its divisors is an integer number (86250321).

Almost surely, 2^172500641 is an apocalyptic number.

It is an amenable number.

172500641 is a deficient number, since it is larger than the sum of its proper divisors (1).

172500641 is an equidigital number, since it uses as much as digits as its factorization.

172500641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 172500641 is about 13133.9499389940. The cubic root of 172500641 is about 556.6688302751.

The spelling of 172500641 in words is "one hundred seventy-two million, five hundred thousand, six hundred forty-one".