51783274 has 4 divisors (see below), whose sum is σ = 77674914. Its totient is φ = 25891636.

The previous prime is 51783271. The next prime is 51783283. The reversal of 51783274 is 47238715.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47238715 = 5 ⋅9447743.

It can be written as a sum of positive squares in only one way, i.e., 28676025 + 23107249 = 5355^2 + 4807^2 .

It is not an unprimeable number, because it can be changed into a prime (51783271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12945817 + ... + 12945820.

Almost surely, 2^51783274 is an apocalyptic number.

51783274 is a deficient number, since it is larger than the sum of its proper divisors (25891640).

51783274 is a wasteful number, since it uses less digits than its factorization.

51783274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25891639.

The product of its digits is 47040, while the sum is 37.

The square root of 51783274 is about 7196.0596162066. The cubic root of 51783274 is about 372.7318473183.

The spelling of 51783274 in words is "fifty-one million, seven hundred eighty-three thousand, two hundred seventy-four".