51045061 has 4 divisors (see below), whose sum is σ = 51089824. Its totient is φ = 51000300.

The previous prime is 51045037. The next prime is 51045079. The reversal of 51045061 is 16054015.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16054015 = 5 ⋅3210803.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51045061 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 (51045011) 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, 20625 + ... + 22966.

It is an arithmetic number, because the mean of its divisors is an integer number (12772456).

Almost surely, 2^51045061 is an apocalyptic number.

It is an amenable number.

51045061 is a deficient number, since it is larger than the sum of its proper divisors (44763).

51045061 is a wasteful number, since it uses less digits than its factorization.

51045061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44762.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 51045061 is about 7144.5826330164. The cubic root of 51045061 is about 370.9521640918.

Adding to 51045061 its reverse (16054015), we get a palindrome (67099076).

The spelling of 51045061 in words is "fifty-one million, forty-five thousand, sixty-one".