51475423 has 4 divisors (see below), whose sum is σ = 51526288. Its totient is φ = 51424560.

The previous prime is 51475409. The next prime is 51475471. The reversal of 51475423 is 32457415.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51475423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51475483) 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, 23883 + ... + 25948.

It is an arithmetic number, because the mean of its divisors is an integer number (12881572).

Almost surely, 2^51475423 is an apocalyptic number.

51475423 is a deficient number, since it is larger than the sum of its proper divisors (50865).

51475423 is a wasteful number, since it uses less digits than its factorization.

51475423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50864.

The product of its digits is 16800, while the sum is 31.

The square root of 51475423 is about 7174.6374821311. The cubic root of 51475423 is about 371.9917498267.

The spelling of 51475423 in words is "fifty-one million, four hundred seventy-five thousand, four hundred twenty-three".