51622747 has 8 divisors (see below), whose sum is σ = 57625920. Its totient is φ = 45837960.

The previous prime is 51622729. The next prime is 51622771. The reversal of 51622747 is 74722615.

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 51622747 - 2¹⁹ = 51098459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51622147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54097 + ... + 55042.

It is an arithmetic number, because the mean of its divisors is an integer number (7203240).

Almost surely, 2^51622747 is an apocalyptic number.

51622747 is a deficient number, since it is larger than the sum of its proper divisors (6003173).

51622747 is a wasteful number, since it uses less digits than its factorization.

51622747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109193.

The product of its digits is 23520, while the sum is 34.

The square root of 51622747 is about 7184.8971460975. The cubic root of 51622747 is about 372.3462951579.

The spelling of 51622747 in words is "fifty-one million, six hundred twenty-two thousand, seven hundred forty-seven".