51395475 has 24 divisors (see below), whose sum is σ = 89448640. Its totient is φ = 25967520.

The previous prime is 51395473. The next prime is 51395497. The reversal of 51395475 is 57459315.

It is not a de Polignac number, because 51395475 - 2¹ = 51395473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51395473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16609 + ... + 19458.

Almost surely, 2^51395475 is an apocalyptic number.

51395475 is a deficient number, since it is larger than the sum of its proper divisors (38053165).

51395475 is a wasteful number, since it uses less digits than its factorization.

51395475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36099 (or 36094 counting only the distinct ones).

The product of its digits is 94500, while the sum is 39.

The square root of 51395475 is about 7169.0637464037. The cubic root of 51395475 is about 371.7990662464.

The spelling of 51395475 in words is "fifty-one million, three hundred ninety-five thousand, four hundred seventy-five".