51105051 has 6 divisors (see below), whose sum is σ = 73818420. Its totient is φ = 34070028.

The previous prime is 51105031. The next prime is 51105053. The reversal of 51105051 is 15050115.

It is not a de Polignac number, because 51105051 - 2⁹ = 51104539 is a prime.

It is a super-2 number, since 2×51105051² = 5223452475425202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51105053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2839161 + ... + 2839178.

It is an arithmetic number, because the mean of its divisors is an integer number (12303070).

Almost surely, 2^51105051 is an apocalyptic number.

51105051 is a deficient number, since it is larger than the sum of its proper divisors (22713369).

51105051 is a wasteful number, since it uses less digits than its factorization.

51105051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5678345 (or 5678342 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The square root of 51105051 is about 7148.7796860723. The cubic root of 51105051 is about 371.0974259963.

Adding to 51105051 its reverse (15050115), we get a palindrome (66155166).

It can be divided in two parts, 5 and 1105051, that multiplied together give a palindrome (5525255).

The spelling of 51105051 in words is "fifty-one million, one hundred five thousand, fifty-one".