51103106 has 4 divisors (see below), whose sum is σ = 76654662. Its totient is φ = 25551552.

The previous prime is 51103069. The next prime is 51103109. The reversal of 51103106 is 60130115.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42133081 + 8970025 = 6491^2 + 2995^2 .

It is a super-2 number, since 2×51103106² = 5223054885694472, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51103109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12775775 + ... + 12775778.

Almost surely, 2^51103106 is an apocalyptic number.

51103106 is a deficient number, since it is larger than the sum of its proper divisors (25551556).

51103106 is a wasteful number, since it uses less digits than its factorization.

51103106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25551555.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 51103106 is about 7148.6436475740. The cubic root of 51103106 is about 371.0927180882.

The spelling of 51103106 in words is "fifty-one million, one hundred three thousand, one hundred six".