51145202 has 4 divisors (see below), whose sum is σ = 76717806. Its totient is φ = 25572600.

The previous prime is 51145121. The next prime is 51145219. The reversal of 51145202 is 20254115.

51145202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 50993881 + 151321 = 7141^2 + 389^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12786299 + ... + 12786302.

Almost surely, 2^51145202 is an apocalyptic number.

51145202 is a deficient number, since it is larger than the sum of its proper divisors (25572604).

51145202 is a wasteful number, since it uses less digits than its factorization.

51145202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25572603.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 51145202 is about 7151.5873762403. The cubic root of 51145202 is about 371.1945855535.

Adding to 51145202 its reverse (20254115), we get a palindrome (71399317).

The spelling of 51145202 in words is "fifty-one million, one hundred forty-five thousand, two hundred two".