51046651 has 4 divisors (see below), whose sum is σ = 51063304. Its totient is φ = 51030000.

The previous prime is 51046649. The next prime is 51046663. The reversal of 51046651 is 15664015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15664015 = 5 ⋅3132803.

It is a cyclic number.

It is not a de Polignac number, because 51046651 - 2¹ = 51046649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51046621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2250 + ... + 10351.

It is an arithmetic number, because the mean of its divisors is an integer number (12765826).

Almost surely, 2^51046651 is an apocalyptic number.

51046651 is a deficient number, since it is larger than the sum of its proper divisors (16653).

51046651 is a wasteful number, since it uses less digits than its factorization.

51046651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16652.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 51046651 is about 7144.6939052698. The cubic root of 51046651 is about 370.9560156418.

The spelling of 51046651 in words is "fifty-one million, forty-six thousand, six hundred fifty-one".