164421562 has 16 divisors (see below), whose sum is σ = 259480872. Its totient is φ = 78036480.

The previous prime is 164421559. The next prime is 164421601. The reversal of 164421562 is 265124461.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 153735201 + 10686361 = 12399^2 + 3269^2 .

It is a super-3 number, since 3×164421562³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24063 + ... + 30130.

Almost surely, 2^164421562 is an apocalyptic number.

164421562 is a deficient number, since it is larger than the sum of its proper divisors (95059310).

164421562 is a wasteful number, since it uses less digits than its factorization.

164421562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54273.

The product of its digits is 11520, while the sum is 31.

The square root of 164421562 is about 12822.6971421772. The cubic root of 164421562 is about 547.8389713700.

The spelling of 164421562 in words is "one hundred sixty-four million, four hundred twenty-one thousand, five hundred sixty-two".