51366346 has 4 divisors (see below), whose sum is σ = 77049522. Its totient is φ = 25683172.

The previous prime is 51366281. The next prime is 51366379. The reversal of 51366346 is 64366315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 36735721 + 14630625 = 6061^2 + 3825^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12841585 + ... + 12841588.

Almost surely, 2^51366346 is an apocalyptic number.

51366346 is a deficient number, since it is larger than the sum of its proper divisors (25683176).

51366346 is a wasteful number, since it uses less digits than its factorization.

51366346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25683175.

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

The square root of 51366346 is about 7167.0318821671. The cubic root of 51366346 is about 371.7288124502.

The spelling of 51366346 in words is "fifty-one million, three hundred sixty-six thousand, three hundred forty-six".