51105461 has 4 divisors (see below), whose sum is σ = 55751424. Its totient is φ = 46459500.

The previous prime is 51105449. The next prime is 51105469. The reversal of 51105461 is 16450115.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51105461 is a prime.

It is a super-2 number, since 2×51105461² = 5223536288045042, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51105469) 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, 2322965 + ... + 2322986.

It is an arithmetic number, because the mean of its divisors is an integer number (13937856).

Almost surely, 2^51105461 is an apocalyptic number.

It is an amenable number.

51105461 is a deficient number, since it is larger than the sum of its proper divisors (4645963).

51105461 is a wasteful number, since it uses less digits than its factorization.

51105461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4645962.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 51105461 is about 7148.8083622377. The cubic root of 51105461 is about 371.0984183936.

Adding to 51105461 its reverse (16450115), we get a palindrome (67555576).

It can be divided in two parts, 511054 and 61, that added together give a palindrome (511115).

The spelling of 51105461 in words is "fifty-one million, one hundred five thousand, four hundred sixty-one".