167467561 has 4 divisors (see below), whose sum is σ = 177318612. Its totient is φ = 157616512.

The previous prime is 167467543. The next prime is 167467609. The reversal of 167467561 is 165764761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 165764761 = 53 ⋅3127637.

It can be written as a sum of positive squares in 2 ways, for example, as 152374336 + 15093225 = 12344^2 + 3885^2 .

It is a cyclic number.

It is not a de Polignac number, because 167467561 - 2⁵ = 167467529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (167467541) 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, 4925500 + ... + 4925533.

It is an arithmetic number, because the mean of its divisors is an integer number (44329653).

Almost surely, 2^167467561 is an apocalyptic number.

It is an amenable number.

167467561 is a deficient number, since it is larger than the sum of its proper divisors (9851051).

167467561 is an equidigital number, since it uses as much as digits as its factorization.

167467561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9851050.

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

The square root of 167467561 is about 12940.9258169576. The cubic root of 167467561 is about 551.2012982068.

The spelling of 167467561 in words is "one hundred sixty-seven million, four hundred sixty-seven thousand, five hundred sixty-one".