51662001 has 8 divisors (see below), whose sum is σ = 69171840. Its totient is φ = 34296752.

The previous prime is 51661999. The next prime is 51662011. The reversal of 51662001 is 10026615.

It is a happy number.

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 51662001 - 2¹ = 51661999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51662011) 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, 35310 + ... + 36743.

It is an arithmetic number, because the mean of its divisors is an integer number (8646480).

Almost surely, 2^51662001 is an apocalyptic number.

It is an amenable number.

51662001 is a deficient number, since it is larger than the sum of its proper divisors (17509839).

51662001 is a wasteful number, since it uses less digits than its factorization.

51662001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72295.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 51662001 is about 7187.6283292892. The cubic root of 51662001 is about 372.4406487726.

Adding to 51662001 its reverse (10026615), we get a palindrome (61688616).

The spelling of 51662001 in words is "fifty-one million, six hundred sixty-two thousand, one".