51954395 has 4 divisors (see below), whose sum is σ = 62345280. Its totient is φ = 41563512.

The previous prime is 51954389. The next prime is 51954407. The reversal of 51954395 is 59345915.

It is a happy number.

51954395 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59345915 = 5 ⋅11869183.

It is a cyclic number.

It is not a de Polignac number, because 51954395 - 2¹² = 51950299 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5195435 + ... + 5195444.

It is an arithmetic number, because the mean of its divisors is an integer number (15586320).

Almost surely, 2^51954395 is an apocalyptic number.

51954395 is a deficient number, since it is larger than the sum of its proper divisors (10390885).

51954395 is a wasteful number, since it uses less digits than its factorization.

51954395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10390884.

The product of its digits is 121500, while the sum is 41.

The square root of 51954395 is about 7207.9397195038. The cubic root of 51954395 is about 373.1419676317.

The spelling of 51954395 in words is "fifty-one million, nine hundred fifty-four thousand, three hundred ninety-five".