197287501 has 2 divisors, whose sum is σ = 197287502. Its totient is φ = 197287500.

The previous prime is 197287477. The next prime is 197287511. The reversal of 197287501 is 105782791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117614025 + 79673476 = 10845^2 + 8926^2 .

It is an emirp because it is prime and its reverse (105782791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197287501 - 2¹³ = 197279309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197287511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98643750 + 98643751.

It is an arithmetic number, because the mean of its divisors is an integer number (98643751).

Almost surely, 2^197287501 is an apocalyptic number.

It is an amenable number.

197287501 is a deficient number, since it is larger than the sum of its proper divisors (1).

197287501 is an equidigital number, since it uses as much as digits as its factorization.

197287501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 40.

The square root of 197287501 is about 14045.9069126917. The cubic root of 197287501 is about 582.1477061994.

The spelling of 197287501 in words is "one hundred ninety-seven million, two hundred eighty-seven thousand, five hundred one".