51660374 has 16 divisors (see below), whose sum is σ = 78479280. Its totient is φ = 25502880.

The previous prime is 51660361. The next prime is 51660377. The reversal of 51660374 is 47306615.

It is a self number, because there is not a number n which added to its sum of digits gives 51660374.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51660377) 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, 70112 + ... + 70844.

It is an arithmetic number, because the mean of its divisors is an integer number (4904955).

Almost surely, 2^51660374 is an apocalyptic number.

51660374 is a deficient number, since it is larger than the sum of its proper divisors (26818906).

51660374 is a wasteful number, since it uses less digits than its factorization.

51660374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 51660374 is about 7187.5151478101. The cubic root of 51660374 is about 372.4367389531.

Adding to 51660374 its reverse (47306615), we get a palindrome (98966989).

The spelling of 51660374 in words is "fifty-one million, six hundred sixty thousand, three hundred seventy-four".