51578159 has 2 divisors, whose sum is σ = 51578160. Its totient is φ = 51578158.

The previous prime is 51578089. The next prime is 51578183. The reversal of 51578159 is 95187515.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51578159 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51578959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25789079 + 25789080.

It is an arithmetic number, because the mean of its divisors is an integer number (25789080).

Almost surely, 2^51578159 is an apocalyptic number.

51578159 is a deficient number, since it is larger than the sum of its proper divisors (1).

51578159 is an equidigital number, since it uses as much as digits as its factorization.

51578159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63000, while the sum is 41.

The square root of 51578159 is about 7181.7935782087. The cubic root of 51578159 is about 372.2390623339.

The spelling of 51578159 in words is "fifty-one million, five hundred seventy-eight thousand, one hundred fifty-nine".