51201203 has 4 divisors (see below), whose sum is σ = 52069080. Its totient is φ = 50333328.

The previous prime is 51201187. The next prime is 51201217. The reversal of 51201203 is 30210215.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51201203 - 2⁴ = 51201187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51201223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433850 + ... + 433967.

It is an arithmetic number, because the mean of its divisors is an integer number (13017270).

Almost surely, 2^51201203 is an apocalyptic number.

51201203 is a deficient number, since it is larger than the sum of its proper divisors (867877).

51201203 is an equidigital number, since it uses as much as digits as its factorization.

51201203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867876.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 51201203 is about 7155.5015896861. The cubic root of 51201203 is about 371.3300149117.

Adding to 51201203 its reverse (30210215), we get a palindrome (81411418).

The spelling of 51201203 in words is "fifty-one million, two hundred one thousand, two hundred three".