51361461 has 24 divisors (see below), whose sum is σ = 77777856. Its totient is φ = 32598720.

The previous prime is 51361433. The next prime is 51361469. The reversal of 51361461 is 16416315.

51361461 is a `hidden beast` number, since 513 + 6 + 146 + 1 = 666.

It is not a de Polignac number, because 51361461 - 2⁷ = 51361333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51361469) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57726 + ... + 58608.

It is an arithmetic number, because the mean of its divisors is an integer number (3240744).

Almost surely, 2^51361461 is an apocalyptic number.

It is an amenable number.

51361461 is a deficient number, since it is larger than the sum of its proper divisors (26416395).

51361461 is a wasteful number, since it uses less digits than its factorization.

51361461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193 (or 1190 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 51361461 is about 7166.6910774778. The cubic root of 51361461 is about 371.7170281273.

Adding to 51361461 its reverse (16416315), we get a palindrome (67777776).

The spelling of 51361461 in words is "fifty-one million, three hundred sixty-one thousand, four hundred sixty-one".