22061493 has 6 divisors (see below), whose sum is σ = 31866614. Its totient is φ = 14707656.

The previous prime is 22061477. The next prime is 22061503. The reversal of 22061493 is 39416022.

It can be written as a sum of positive squares in only one way, i.e., 15186609 + 6874884 = 3897^2 + 2622^2 .

It is not a de Polignac number, because 22061493 - 2⁴ = 22061477 is a prime.

It is a super-4 number, since 4×22061493⁴ (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22061423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1225630 + ... + 1225647.

Almost surely, 2^22061493 is an apocalyptic number.

It is an amenable number.

22061493 is a deficient number, since it is larger than the sum of its proper divisors (9805121).

22061493 is a wasteful number, since it uses less digits than its factorization.

22061493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451283 (or 2451280 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 22061493 is about 4696.9663613869. The cubic root of 22061493 is about 280.4647596019.

The spelling of 22061493 in words is "twenty-two million, sixty-one thousand, four hundred ninety-three".