51315201 has 40 divisors (see below), whose sum is σ = 89443200. Its totient is φ = 29307096.

The previous prime is 51315157. The next prime is 51315203. The reversal of 51315201 is 10251315.

51315201 is a `hidden beast` number, since 513 + 152 + 0 + 1 = 666.

It is not a de Polignac number, because 51315201 - 2¹⁷ = 51184129 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51315203) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26860 + ... + 28706.

It is an arithmetic number, because the mean of its divisors is an integer number (2236080).

Almost surely, 2^51315201 is an apocalyptic number.

It is an amenable number.

51315201 is a deficient number, since it is larger than the sum of its proper divisors (38127999).

51315201 is an equidigital number, since it uses as much as digits as its factorization.

51315201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880 (or 1857 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 51315201 is about 7163.4629195662. The cubic root of 51315201 is about 371.6053958221.

Adding to 51315201 its reverse (10251315), we get a palindrome (61566516).

The spelling of 51315201 in words is "fifty-one million, three hundred fifteen thousand, two hundred one".