52668407 has 4 divisors (see below), whose sum is σ = 57456456. Its totient is φ = 47880360.

The previous prime is 52668403. The next prime is 52668409. The reversal of 52668407 is 70486625.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 52668407 - 2² = 52668403 is a prime.

It is a super-2 number, since 2×52668407² = 5547922191835298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52668403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2394008 + ... + 2394029.

It is an arithmetic number, because the mean of its divisors is an integer number (14364114).

Almost surely, 2^52668407 is an apocalyptic number.

52668407 is a deficient number, since it is larger than the sum of its proper divisors (4788049).

52668407 is a wasteful number, since it uses less digits than its factorization.

52668407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4788048.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 52668407 is about 7257.3002556047. The cubic root of 52668407 is about 374.8435661590.

The spelling of 52668407 in words is "fifty-two million, six hundred sixty-eight thousand, four hundred seven".