51475001 has 4 divisors (see below), whose sum is σ = 52180212. Its totient is φ = 50769792.

The previous prime is 51474991. The next prime is 51475013. The reversal of 51475001 is 10057415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10057415 = 5 ⋅2011483.

It can be written as a sum of positive squares in 2 ways, for example, as 41615401 + 9859600 = 6451^2 + 3140^2 .

It is a cyclic number.

It is not a de Polignac number, because 51475001 - 2²² = 47280697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51475051) 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, 352496 + ... + 352641.

It is an arithmetic number, because the mean of its divisors is an integer number (13045053).

Almost surely, 2^51475001 is an apocalyptic number.

It is an amenable number.

51475001 is a deficient number, since it is larger than the sum of its proper divisors (705211).

51475001 is an equidigital number, since it uses as much as digits as its factorization.

51475001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705210.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 51475001 is about 7174.6080729194. The cubic root of 51475001 is about 371.9907332836.

The spelling of 51475001 in words is "fifty-one million, four hundred seventy-five thousand, one".