51159653 has 4 divisors (see below), whose sum is σ = 51175488. Its totient is φ = 51143820.

The previous prime is 51159649. The next prime is 51159673. The reversal of 51159653 is 35695115.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35695115 = 5 ⋅7139023.

It is a cyclic number.

It is not a de Polignac number, because 51159653 - 2² = 51159649 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 (51159673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1133 + ... + 10178.

It is an arithmetic number, because the mean of its divisors is an integer number (12793872).

Almost surely, 2^51159653 is an apocalyptic number.

It is an amenable number.

51159653 is a deficient number, since it is larger than the sum of its proper divisors (15835).

51159653 is a wasteful number, since it uses less digits than its factorization.

51159653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15834.

The product of its digits is 20250, while the sum is 35.

The square root of 51159653 is about 7152.5976400186. The cubic root of 51159653 is about 371.2295424189.

The spelling of 51159653 in words is "fifty-one million, one hundred fifty-nine thousand, six hundred fifty-three".