51361534 has 16 divisors (see below), whose sum is σ = 89164800. Its totient is φ = 21732984.

The previous prime is 51361511. The next prime is 51361537. The reversal of 51361534 is 43516315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51361537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22114 + ... + 24325.

It is an arithmetic number, because the mean of its divisors is an integer number (5572800).

Almost surely, 2^51361534 is an apocalyptic number.

51361534 is a deficient number, since it is larger than the sum of its proper divisors (37803266).

51361534 is a wasteful number, since it uses less digits than its factorization.

51361534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46527.

The product of its digits is 5400, while the sum is 28.

The square root of 51361534 is about 7166.6961704819. The cubic root of 51361534 is about 371.7172042342.

Adding to 51361534 its reverse (43516315), we get a palindrome (94877849).

It can be divided in two parts, 5136 and 1534, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 51361534 in words is "fifty-one million, three hundred sixty-one thousand, five hundred thirty-four".