51100203 has 32 divisors (see below), whose sum is σ = 85547520. Its totient is φ = 26357760.

The previous prime is 51100169. The next prime is 51100213. The reversal of 51100203 is 30200115.

It is not a de Polignac number, because 51100203 - 2⁸ = 51099947 is a prime.

It is a super-2 number, since 2×51100203² = 5222461493282418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51100213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35563 + ... + 36971.

It is an arithmetic number, because the mean of its divisors is an integer number (2673360).

Almost surely, 2^51100203 is an apocalyptic number.

51100203 is a deficient number, since it is larger than the sum of its proper divisors (34447317).

51100203 is a wasteful number, since it uses less digits than its factorization.

51100203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 51100203 is about 7148.4405991797. The cubic root of 51100203 is about 371.0856911014.

Adding to 51100203 its reverse (30200115), we get a palindrome (81300318).

The spelling of 51100203 in words is "fifty-one million, one hundred thousand, two hundred three".