51756041 has 4 divisors (see below), whose sum is σ = 54800532. Its totient is φ = 48711552.

The previous prime is 51756031. The next prime is 51756043. The reversal of 51756041 is 14065715.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31685641 + 20070400 = 5629^2 + 4480^2 .

It is a cyclic number.

It is not a de Polignac number, because 51756041 - 2¹⁴ = 51739657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51755995 and 51756013.

It is not an unprimeable number, because it can be changed into a prime (51756043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1522220 + ... + 1522253.

It is an arithmetic number, because the mean of its divisors is an integer number (13700133).

Almost surely, 2^51756041 is an apocalyptic number.

It is an amenable number.

51756041 is a deficient number, since it is larger than the sum of its proper divisors (3044491).

51756041 is a wasteful number, since it uses less digits than its factorization.

51756041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044490.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 51756041 is about 7194.1671512413. The cubic root of 51756041 is about 372.6664955451. Note that the first 3 decimals are identical.

The spelling of 51756041 in words is "fifty-one million, seven hundred fifty-six thousand, forty-one".