51873746 has 4 divisors (see below), whose sum is σ = 77810622. Its totient is φ = 25936872.

The previous prime is 51873737. The next prime is 51873751. The reversal of 51873746 is 64737815.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64737815 = 5 ⋅12947563.

It can be written as a sum of positive squares in only one way, i.e., 33512521 + 18361225 = 5789^2 + 4285^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12968435 + ... + 12968438.

Almost surely, 2^51873746 is an apocalyptic number.

51873746 is a deficient number, since it is larger than the sum of its proper divisors (25936876).

51873746 is a wasteful number, since it uses less digits than its factorization.

51873746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25936875.

The product of its digits is 141120, while the sum is 41.

The square root of 51873746 is about 7202.3430909670. The cubic root of 51873746 is about 372.9487910877.

The spelling of 51873746 in words is "fifty-one million, eight hundred seventy-three thousand, seven hundred forty-six".