51525643 has 8 divisors (see below), whose sum is σ = 56843136. Its totient is φ = 46401600.

The previous prime is 51525641. The next prime is 51525667. The reversal of 51525643 is 34652515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51525643 - 2¹ = 51525641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51525641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47803 + ... + 48868.

It is an arithmetic number, because the mean of its divisors is an integer number (7105392).

Almost surely, 2^51525643 is an apocalyptic number.

51525643 is a deficient number, since it is larger than the sum of its proper divisors (5317493).

51525643 is a wasteful number, since it uses less digits than its factorization.

51525643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96725.

The product of its digits is 18000, while the sum is 31.

The square root of 51525643 is about 7178.1364573265. The cubic root of 51525643 is about 372.1126836148.

The spelling of 51525643 in words is "fifty-one million, five hundred twenty-five thousand, six hundred forty-three".