51574738 has 4 divisors (see below), whose sum is σ = 77362110. Its totient is φ = 25787368.

The previous prime is 51574709. The next prime is 51574799. The reversal of 51574738 is 83747515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83747515 = 5 ⋅16749503.

It can be written as a sum of positive squares in only one way, i.e., 51365889 + 208849 = 7167^2 + 457^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51574738.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12893683 + ... + 12893686.

Almost surely, 2^51574738 is an apocalyptic number.

51574738 is a deficient number, since it is larger than the sum of its proper divisors (25787372).

51574738 is a wasteful number, since it uses less digits than its factorization.

51574738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25787371.

The product of its digits is 117600, while the sum is 40.

The square root of 51574738 is about 7181.5554025573. Note that the first 3 decimals coincide. The cubic root of 51574738 is about 372.2308323776.

The spelling of 51574738 in words is "fifty-one million, five hundred seventy-four thousand, seven hundred thirty-eight".