51202001 has 4 divisors (see below), whose sum is σ = 51240000. Its totient is φ = 51164004.

The previous prime is 51201991. The next prime is 51202007. The reversal of 51202001 is 10020215.

51202001 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10020215 = 5 ⋅2004043.

It is a cyclic number.

It is not a de Polignac number, because 51202001 - 2¹⁰ = 51200977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51202007) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 16901 + ... + 19698.

It is an arithmetic number, because the mean of its divisors is an integer number (12810000).

Almost surely, 2^51202001 is an apocalyptic number.

It is an amenable number.

51202001 is a deficient number, since it is larger than the sum of its proper divisors (37999).

51202001 is a wasteful number, since it uses less digits than its factorization.

51202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37998.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 51202001 is about 7155.5573507589. The cubic root of 51202001 is about 371.3319440319.

Adding to 51202001 its reverse (10020215), we get a palindrome (61222216).

The spelling of 51202001 in words is "fifty-one million, two hundred two thousand, one".