51405741 has 12 divisors (see below), whose sum is σ = 74456668. Its totient is φ = 34176384.

The previous prime is 51405721. The next prime is 51405749. The reversal of 51405741 is 14750415.

It is a happy number.

51405741 is a `hidden beast` number, since 51 + 40 + 574 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8555625 + 42850116 = 2925^2 + 6546^2 .

It is not a de Polignac number, because 51405741 - 2⁵ = 51405709 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 (51405749) 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, 4300 + ... + 11013.

Almost surely, 2^51405741 is an apocalyptic number.

It is an amenable number.

51405741 is a deficient number, since it is larger than the sum of its proper divisors (23050927).

51405741 is a wasteful number, since it uses less digits than its factorization.

51405741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15692 (or 15689 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 51405741 is about 7169.7797037287. The cubic root of 51405741 is about 371.8238196260.

The spelling of 51405741 in words is "fifty-one million, four hundred five thousand, seven hundred forty-one".