51976187 has 2 divisors, whose sum is σ = 51976188. Its totient is φ = 51976186.

The previous prime is 51976103. The next prime is 51976201. The reversal of 51976187 is 78167915.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51976187 - 2¹² = 51972091 is a prime.

It is not a weakly prime, because it can be changed into another prime (51906187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25988093 + 25988094.

It is an arithmetic number, because the mean of its divisors is an integer number (25988094).

Almost surely, 2^51976187 is an apocalyptic number.

51976187 is a deficient number, since it is larger than the sum of its proper divisors (1).

51976187 is an equidigital number, since it uses as much as digits as its factorization.

51976187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 44.

The square root of 51976187 is about 7209.4512273820. The cubic root of 51976187 is about 373.1941311565.

The spelling of 51976187 in words is "fifty-one million, nine hundred seventy-six thousand, one hundred eighty-seven".