197535487 has 2 divisors, whose sum is σ = 197535488. Its totient is φ = 197535486.

The previous prime is 197535473. The next prime is 197535493. The reversal of 197535487 is 784535791.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197535487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 197535487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197535467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98767743 + 98767744.

It is an arithmetic number, because the mean of its divisors is an integer number (98767744).

Almost surely, 2^197535487 is an apocalyptic number.

197535487 is a deficient number, since it is larger than the sum of its proper divisors (1).

197535487 is an equidigital number, since it uses as much as digits as its factorization.

197535487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 49.

The square root of 197535487 is about 14054.7318366449. The cubic root of 197535487 is about 582.3915196441.

The spelling of 197535487 in words is "one hundred ninety-seven million, five hundred thirty-five thousand, four hundred eighty-seven".