51555203 has 24 divisors (see below), whose sum is σ = 64638000. Its totient is φ = 40846848.

The previous prime is 51555199. The next prime is 51555221. The reversal of 51555203 is 30255515.

It is not a de Polignac number, because 51555203 - 2² = 51555199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51555223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48623 + ... + 49671.

It is an arithmetic number, because the mean of its divisors is an integer number (2693250).

Almost surely, 2^51555203 is an apocalyptic number.

51555203 is a deficient number, since it is larger than the sum of its proper divisors (13082797).

51555203 is a wasteful number, since it uses less digits than its factorization.

51555203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 51555203 is about 7180.1951923329. The cubic root of 51555203 is about 372.1838297308.

The spelling of 51555203 in words is "fifty-one million, five hundred fifty-five thousand, two hundred three".