51528001 has 4 divisors (see below), whose sum is σ = 58889152. Its totient is φ = 44166852.

The previous prime is 51527989. The next prime is 51528007. The reversal of 51528001 is 10082515.

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 a cyclic number.

It is not a de Polignac number, because 51528001 - 2⁷ = 51527873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51528007) 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, 3680565 + ... + 3680578.

It is an arithmetic number, because the mean of its divisors is an integer number (14722288).

Almost surely, 2^51528001 is an apocalyptic number.

It is an amenable number.

51528001 is a deficient number, since it is larger than the sum of its proper divisors (7361151).

51528001 is an equidigital number, since it uses as much as digits as its factorization.

51528001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7361150.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 51528001 is about 7178.3007042057. The cubic root of 51528001 is about 372.1183599362.

The spelling of 51528001 in words is "fifty-one million, five hundred twenty-eight thousand, one".