167540497 has 4 divisors (see below), whose sum is σ = 167580196. Its totient is φ = 167500800.

The previous prime is 167540489. The next prime is 167540501. The reversal of 167540497 is 794045761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42302016 + 125238481 = 6504^2 + 11191^2 .

It is a cyclic number.

It is not a de Polignac number, because 167540497 - 2³ = 167540489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (167540407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12648 + ... + 22249.

It is an arithmetic number, because the mean of its divisors is an integer number (41895049).

Almost surely, 2^167540497 is an apocalyptic number.

It is an amenable number.

167540497 is a deficient number, since it is larger than the sum of its proper divisors (39699).

167540497 is an equidigital number, since it uses as much as digits as its factorization.

167540497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39698.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 167540497 is about 12943.7435465942. The cubic root of 167540497 is about 551.2813069016.

The spelling of 167540497 in words is "one hundred sixty-seven million, five hundred forty thousand, four hundred ninety-seven".