51230201 has 4 divisors (see below), whose sum is σ = 55887504. Its totient is φ = 46572900.

The previous prime is 51230183. The next prime is 51230219. The reversal of 51230201 is 10203215.

It is a happy number.

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.

It is an interprime number because it is at equal distance from previous prime (51230183) and next prime (51230219).

It is a de Polignac number, because none of the positive numbers 2^k-51230201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51230261) 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, 2328635 + ... + 2328656.

It is an arithmetic number, because the mean of its divisors is an integer number (13971876).

Almost surely, 2^51230201 is an apocalyptic number.

It is an amenable number.

51230201 is a deficient number, since it is larger than the sum of its proper divisors (4657303).

51230201 is a wasteful number, since it uses less digits than its factorization.

51230201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4657302.

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

The square root of 51230201 is about 7157.5275759161. The cubic root of 51230201 is about 371.4001030801.

Adding to 51230201 its reverse (10203215), we get a palindrome (61433416).

The spelling of 51230201 in words is "fifty-one million, two hundred thirty thousand, two hundred one".