51475135 has 4 divisors (see below), whose sum is σ = 61770168. Its totient is φ = 41180104.

The previous prime is 51475129. The next prime is 51475139. The reversal of 51475135 is 53157415.

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

It is a cyclic number.

It is not a de Polignac number, because 51475135 - 2¹¹ = 51473087 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51475097 and 51475106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51475139) 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, 5147509 + ... + 5147518.

It is an arithmetic number, because the mean of its divisors is an integer number (15442542).

Almost surely, 2^51475135 is an apocalyptic number.

51475135 is a deficient number, since it is larger than the sum of its proper divisors (10295033).

51475135 is a wasteful number, since it uses less digits than its factorization.

51475135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10295032.

The product of its digits is 10500, while the sum is 31.

The square root of 51475135 is about 7174.6174114025. The cubic root of 51475135 is about 371.9910560728.

The spelling of 51475135 in words is "fifty-one million, four hundred seventy-five thousand, one hundred thirty-five".