51028601 has 4 divisors (see below), whose sum is σ = 54953892. Its totient is φ = 47103312.

The previous prime is 51028597. The next prime is 51028609. The reversal of 51028601 is 10682015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33051001 + 17977600 = 5749^2 + 4240^2 .

It is a cyclic number.

It is not a de Polignac number, because 51028601 - 2² = 51028597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51028609) 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, 1962626 + ... + 1962651.

It is an arithmetic number, because the mean of its divisors is an integer number (13738473).

Almost surely, 2^51028601 is an apocalyptic number.

It is an amenable number.

51028601 is a deficient number, since it is larger than the sum of its proper divisors (3925291).

51028601 is a wasteful number, since it uses less digits than its factorization.

51028601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3925290.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 51028601 is about 7143.4306184074. The cubic root of 51028601 is about 370.9122873703.

The spelling of 51028601 in words is "fifty-one million, twenty-eight thousand, six hundred one".