51158741 has 4 divisors (see below), whose sum is σ = 51806400. Its totient is φ = 50511084.

The previous prime is 51158719. The next prime is 51158747. The reversal of 51158741 is 14785115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14785115 = 5 ⋅2957023.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51158741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51158698 and 51158707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51158747) 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, 323711 + ... + 323868.

It is an arithmetic number, because the mean of its divisors is an integer number (12951600).

Almost surely, 2^51158741 is an apocalyptic number.

It is an amenable number.

51158741 is a deficient number, since it is larger than the sum of its proper divisors (647659).

51158741 is an equidigital number, since it uses as much as digits as its factorization.

51158741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647658.

The product of its digits is 5600, while the sum is 32.

The square root of 51158741 is about 7152.5338866726. The cubic root of 51158741 is about 371.2273364921.

The spelling of 51158741 in words is "fifty-one million, one hundred fifty-eight thousand, seven hundred forty-one".