51608159 has 4 divisors (see below), whose sum is σ = 53852016. Its totient is φ = 49364304.

The previous prime is 51608143. The next prime is 51608173. The reversal of 51608159 is 95180615.

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 51608159 - 2⁴ = 51608143 is a prime.

It is a super-3 number, since 3×51608159³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51608759) 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, 1121894 + ... + 1121939.

It is an arithmetic number, because the mean of its divisors is an integer number (13463004).

Almost surely, 2^51608159 is an apocalyptic number.

51608159 is a deficient number, since it is larger than the sum of its proper divisors (2243857).

51608159 is a wasteful number, since it uses less digits than its factorization.

51608159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243856.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 51608159 is about 7183.8818893409. The cubic root of 51608159 is about 372.3112182470.

The spelling of 51608159 in words is "fifty-one million, six hundred eight thousand, one hundred fifty-nine".