56666026 has 4 divisors (see below), whose sum is σ = 84999042. Its totient is φ = 28333012.

The previous prime is 56666017. The next prime is 56666053. The reversal of 56666026 is 62066665.

56666026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62066665 = 5 ⋅12413333.

It can be written as a sum of positive squares in only one way, i.e., 56625625 + 40401 = 7525^2 + 201^2 .

It is a super-2 number, since 2×56666026² = 6422077005265352, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14166505 + ... + 14166508.

Almost surely, 2^56666026 is an apocalyptic number.

56666026 is a deficient number, since it is larger than the sum of its proper divisors (28333016).

56666026 is a wasteful number, since it uses less digits than its factorization.

56666026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28333015.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 56666026 is about 7527.6839731753. The cubic root of 56666026 is about 384.0970033076.

The spelling of 56666026 in words is "fifty-six million, six hundred sixty-six thousand, twenty-six".