167254561 has 4 divisors (see below), whose sum is σ = 167282500. Its totient is φ = 167226624.

The previous prime is 167254559. The next prime is 167254567. The reversal of 167254561 is 165452761.

167254561 = T₁₀₅₅₈ + T₁₀₅₅₉ + T₁₀₅₆₀.

It is a happy number.

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 142563600 + 24690961 = 11940^2 + 4969^2 .

It is a cyclic number.

It is not a de Polignac number, because 167254561 - 2¹ = 167254559 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 167254561.

It is not an unprimeable number, because it can be changed into a prime (167254567) 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, 936 + ... + 18313.

It is an arithmetic number, because the mean of its divisors is an integer number (41820625).

Almost surely, 2^167254561 is an apocalyptic number.

167254561 is the 10560-th centered triangular number.

It is an amenable number.

167254561 is a deficient number, since it is larger than the sum of its proper divisors (27939).

167254561 is an equidigital number, since it uses as much as digits as its factorization.

167254561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27938.

The product of its digits is 50400, while the sum is 37.

The square root of 167254561 is about 12932.6934936231. The cubic root of 167254561 is about 550.9675102686.

The spelling of 167254561 in words is "one hundred sixty-seven million, two hundred fifty-four thousand, five hundred sixty-one".