980172541 has 2 divisors, whose sum is σ = 980172542. Its totient is φ = 980172540.

The previous prime is 980172521. The next prime is 980172563. The reversal of 980172541 is 145271089.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 693005625 + 287166916 = 26325^2 + 16946^2 .

It is a cyclic number.

It is not a de Polignac number, because 980172541 - 2⁹ = 980172029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 980172541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (980172521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490086270 + 490086271.

It is an arithmetic number, because the mean of its divisors is an integer number (490086271).

Almost surely, 2^980172541 is an apocalyptic number.

It is an amenable number.

980172541 is a deficient number, since it is larger than the sum of its proper divisors (1).

980172541 is an equidigital number, since it uses as much as digits as its factorization.

980172541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 980172541 is about 31307.7073737442. The cubic root of 980172541 is about 993.3466784863.

The spelling of 980172541 in words is "nine hundred eighty million, one hundred seventy-two thousand, five hundred forty-one".