51513741 has 12 divisors (see below), whose sum is σ = 74884732. Its totient is φ = 34122816.

The previous prime is 51513719. The next prime is 51513743. The reversal of 51513741 is 14731515.

It can be written as a sum of positive squares in 2 ways, for example, as 26563716 + 24950025 = 5154^2 + 4995^2 .

It is not a de Polignac number, because 51513741 - 2⁹ = 51513229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51513743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16816 + ... + 19641.

Almost surely, 2^51513741 is an apocalyptic number.

It is an amenable number.

51513741 is a deficient number, since it is larger than the sum of its proper divisors (23370991).

51513741 is a wasteful number, since it uses less digits than its factorization.

51513741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36620 (or 36617 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 51513741 is about 7177.3073641861. The cubic root of 51513741 is about 372.0840297513.

The spelling of 51513741 in words is "fifty-one million, five hundred thirteen thousand, seven hundred forty-one".