75270197 has 2 divisors, whose sum is σ = 75270198. Its totient is φ = 75270196.

The previous prime is 75270187. The next prime is 75270259. The reversal of 75270197 is 79107257.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54848836 + 20421361 = 7406^2 + 4519^2 .

It is a cyclic number.

It is not a de Polignac number, because 75270197 - 2⁸ = 75269941 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75270197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75270187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37635098 + 37635099.

It is an arithmetic number, because the mean of its divisors is an integer number (37635099).

Almost surely, 2^75270197 is an apocalyptic number.

It is an amenable number.

75270197 is a deficient number, since it is larger than the sum of its proper divisors (1).

75270197 is an equidigital number, since it uses as much as digits as its factorization.

75270197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30870, while the sum is 38.

The square root of 75270197 is about 8675.8398440727. The cubic root of 75270197 is about 422.2221545424. Note that the first 3 decimals are identical.

The spelling of 75270197 in words is "seventy-five million, two hundred seventy thousand, one hundred ninety-seven".