51006549 has 8 divisors (see below), whose sum is σ = 74191392. Its totient is φ = 30913040.

The previous prime is 51006547. The next prime is 51006551. The reversal of 51006549 is 94560015.

It is an interprime number because it is at equal distance from previous prime (51006547) and next prime (51006551).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51006549 - 2¹ = 51006547 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51006541) 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 7 ways as a sum of consecutive naturals, for example, 772794 + ... + 772859.

It is an arithmetic number, because the mean of its divisors is an integer number (9273924).

Almost surely, 2^51006549 is an apocalyptic number.

It is an amenable number.

51006549 is a deficient number, since it is larger than the sum of its proper divisors (23184843).

51006549 is a wasteful number, since it uses less digits than its factorization.

51006549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545667.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 51006549 is about 7141.8869355374. The cubic root of 51006549 is about 370.8588497809.

The spelling of 51006549 in words is "fifty-one million, six thousand, five hundred forty-nine".