167250421 has 4 divisors (see below), whose sum is σ = 180115852. Its totient is φ = 154384992.

The previous prime is 167250409. The next prime is 167250431. The reversal of 167250421 is 124052761.

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 13242321 + 154008100 = 3639^2 + 12410^2 .

It is a cyclic number.

It is not a de Polignac number, because 167250421 - 2⁹ = 167249909 is a prime.

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 167250421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167250431) 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, 6432696 + ... + 6432721.

It is an arithmetic number, because the mean of its divisors is an integer number (45028963).

Almost surely, 2^167250421 is an apocalyptic number.

It is an amenable number.

167250421 is a deficient number, since it is larger than the sum of its proper divisors (12865431).

167250421 is a wasteful number, since it uses less digits than its factorization.

167250421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12865430.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 167250421 is about 12932.5334331677. The cubic root of 167250421 is about 550.9629642554.

The spelling of 167250421 in words is "one hundred sixty-seven million, two hundred fifty thousand, four hundred twenty-one".