51525201 has 32 divisors (see below), whose sum is σ = 86856448. Its totient is φ = 26438400.

The previous prime is 51525191. The next prime is 51525203. The reversal of 51525201 is 10252515.

It is not a de Polignac number, because 51525201 - 2⁷ = 51525073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (51525203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7551 + ... + 12651.

It is an arithmetic number, because the mean of its divisors is an integer number (2714264).

Almost surely, 2^51525201 is an apocalyptic number.

It is an amenable number.

51525201 is a deficient number, since it is larger than the sum of its proper divisors (35331247).

51525201 is a wasteful number, since it uses less digits than its factorization.

51525201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5161.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 51525201 is about 7178.1056693253. The cubic root of 51525201 is about 372.1116195862. Note that the first 3 decimals are identical.

Adding to 51525201 its reverse (10252515), we get a palindrome (61777716).

The spelling of 51525201 in words is "fifty-one million, five hundred twenty-five thousand, two hundred one".