51240201 has 16 divisors (see below), whose sum is σ = 70203840. Its totient is φ = 33223680.

The previous prime is 51240121. The next prime is 51240221. The reversal of 51240201 is 10204215.

51240201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51240201 - 2⁷ = 51240073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51240221) 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 15 ways as a sum of consecutive naturals, for example, 75801 + ... + 76473.

It is an arithmetic number, because the mean of its divisors is an integer number (4387740).

Almost surely, 2^51240201 is an apocalyptic number.

It is an amenable number.

51240201 is a deficient number, since it is larger than the sum of its proper divisors (18963639).

51240201 is a wasteful number, since it uses less digits than its factorization.

51240201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 51240201 is about 7158.2261070743. The cubic root of 51240201 is about 371.4242669479.

Adding to 51240201 its reverse (10204215), we get a palindrome (61444416).

The spelling of 51240201 in words is "fifty-one million, two hundred forty thousand, two hundred one".