51362481 has 4 divisors (see below), whose sum is σ = 68483312. Its totient is φ = 34241652.

The previous prime is 51362477. The next prime is 51362501. The reversal of 51362481 is 18426315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51362481 - 2² = 51362477 is a prime.

It is a super-2 number, since 2×51362481² = 5276208908950722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51362471) 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, 8560411 + ... + 8560416.

It is an arithmetic number, because the mean of its divisors is an integer number (17120828).

Almost surely, 2^51362481 is an apocalyptic number.

It is an amenable number.

51362481 is a deficient number, since it is larger than the sum of its proper divisors (17120831).

51362481 is a wasteful number, since it uses less digits than its factorization.

51362481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17120830.

The product of its digits is 5760, while the sum is 30.

The square root of 51362481 is about 7166.7622396728. The cubic root of 51362481 is about 371.7194887846.

Adding to 51362481 its reverse (18426315), we get a palindrome (69788796).

The spelling of 51362481 in words is "fifty-one million, three hundred sixty-two thousand, four hundred eighty-one".