145567197 has 12 divisors (see below), whose sum is σ = 210383004. Its totient is φ = 96989760.

The previous prime is 145567127. The next prime is 145567241. The reversal of 145567197 is 791765541.

145567197 is a `hidden beast` number, since 1 + 4 + 556 + 7 + 1 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4575321 + 140991876 = 2139^2 + 11874^2 .

It is not a de Polignac number, because 145567197 - 2¹¹ = 145565149 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145567117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18033 + ... + 24825.

It is an arithmetic number, because the mean of its divisors is an integer number (17531917).

Almost surely, 2^145567197 is an apocalyptic number.

It is an amenable number.

145567197 is a deficient number, since it is larger than the sum of its proper divisors (64815807).

145567197 is a wasteful number, since it uses less digits than its factorization.

145567197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9180 (or 9177 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 145567197 is about 12065.1231655545. The cubic root of 145567197 is about 526.0429119188.

The spelling of 145567197 in words is "one hundred forty-five million, five hundred sixty-seven thousand, one hundred ninety-seven".