51038461 has 4 divisors (see below), whose sum is σ = 51737692. Its totient is φ = 50339232.

The previous prime is 51038441. The next prime is 51038479. The reversal of 51038461 is 16483015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16483015 = 5 ⋅3296603.

It can be written as a sum of positive squares in 2 ways, for example, as 13461561 + 37576900 = 3669^2 + 6130^2 .

It is a cyclic number.

It is not a de Polignac number, because 51038461 - 2⁷ = 51038333 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 (51038441) 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, 349506 + ... + 349651.

It is an arithmetic number, because the mean of its divisors is an integer number (12934423).

Almost surely, 2^51038461 is an apocalyptic number.

It is an amenable number.

51038461 is a deficient number, since it is larger than the sum of its proper divisors (699231).

51038461 is an equidigital number, since it uses as much as digits as its factorization.

51038461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699230.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 51038461 is about 7144.1207296630. The cubic root of 51038461 is about 370.9361756705.

The spelling of 51038461 in words is "fifty-one million, thirty-eight thousand, four hundred sixty-one".