51663346 has 32 divisors (see below), whose sum is σ = 91238400. Its totient is φ = 21930048.

The previous prime is 51663319. The next prime is 51663347. The reversal of 51663346 is 64336615.

It is not an unprimeable number, because it can be changed into a prime (51663347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86826 + ... + 87418.

It is an arithmetic number, because the mean of its divisors is an integer number (2851200).

Almost surely, 2^51663346 is an apocalyptic number.

51663346 is a deficient number, since it is larger than the sum of its proper divisors (39575054).

51663346 is a wasteful number, since it uses less digits than its factorization.

51663346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743 (or 729 counting only the distinct ones).

The product of its digits is 38880, while the sum is 34.

The square root of 51663346 is about 7187.7218922270. The cubic root of 51663346 is about 372.4438808601.

The spelling of 51663346 in words is "fifty-one million, six hundred sixty-three thousand, three hundred forty-six".