51614987 has 2 divisors, whose sum is σ = 51614988. Its totient is φ = 51614986.

The previous prime is 51614957. The next prime is 51614999. The reversal of 51614987 is 78941615.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51614987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51614957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25807493 + 25807494.

It is an arithmetic number, because the mean of its divisors is an integer number (25807494).

Almost surely, 2^51614987 is an apocalyptic number.

51614987 is a deficient number, since it is larger than the sum of its proper divisors (1).

51614987 is an equidigital number, since it uses as much as digits as its factorization.

51614987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 41.

The square root of 51614987 is about 7184.3571041534. The cubic root of 51614987 is about 372.3276370261.

The spelling of 51614987 in words is "fifty-one million, six hundred fourteen thousand, nine hundred eighty-seven".