51103263 has 16 divisors (see below), whose sum is σ = 72311040. Its totient is φ = 32032704.

The previous prime is 51103259. The next prime is 51103277. The reversal of 51103263 is 36230115.

It is not a de Polignac number, because 51103263 - 2² = 51103259 is a prime.

It is a super-2 number, since 2×51103263² = 5223086978494338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51103243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2206 + ... + 10347.

It is an arithmetic number, because the mean of its divisors is an integer number (4519440).

Almost surely, 2^51103263 is an apocalyptic number.

51103263 is a deficient number, since it is larger than the sum of its proper divisors (21207777).

51103263 is a wasteful number, since it uses less digits than its factorization.

51103263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12638.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 51103263 is about 7148.6546286696. The cubic root of 51103263 is about 371.0930981140.

Adding to 51103263 its reverse (36230115), we get a palindrome (87333378).

The spelling of 51103263 in words is "fifty-one million, one hundred three thousand, two hundred sixty-three".