51028001 has 4 divisors (see below), whose sum is σ = 51202452. Its totient is φ = 50853552.

The previous prime is 51027967. The next prime is 51028009. The reversal of 51028001 is 10082015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10082015 = 5 ⋅2016403.

It can be written as a sum of positive squares in 2 ways, for example, as 31091776 + 19936225 = 5576^2 + 4465^2 .

It is a cyclic number.

It is not a de Polignac number, because 51028001 - 2¹⁴ = 51011617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51028009) 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, 86786 + ... + 87371.

It is an arithmetic number, because the mean of its divisors is an integer number (12800613).

Almost surely, 2^51028001 is an apocalyptic number.

It is an amenable number.

51028001 is a deficient number, since it is larger than the sum of its proper divisors (174451).

51028001 is a wasteful number, since it uses less digits than its factorization.

51028001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174450.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 51028001 is about 7143.3886216557. The cubic root of 51028001 is about 370.9108336219.

The spelling of 51028001 in words is "fifty-one million, twenty-eight thousand, one".