51893668 has 12 divisors (see below), whose sum is σ = 91618380. Its totient is φ = 25716992.

The previous prime is 51893663. The next prime is 51893671. The reversal of 51893668 is 86639815.

It can be written as a sum of positive squares in 2 ways, for example, as 16467364 + 35426304 = 4058^2 + 5952^2 .

It is not an unprimeable number, because it can be changed into a prime (51893663) 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, 56953 + ... + 57856.

It is an arithmetic number, because the mean of its divisors is an integer number (7634865).

Almost surely, 2^51893668 is an apocalyptic number.

It is an amenable number.

51893668 is a deficient number, since it is larger than the sum of its proper divisors (39724712).

51893668 is a wasteful number, since it uses less digits than its factorization.

51893668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114926 (or 114924 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 51893668 is about 7203.7259803521. The cubic root of 51893668 is about 372.9965283694.

The spelling of 51893668 in words is "fifty-one million, eight hundred ninety-three thousand, six hundred sixty-eight".