51878963 has 2 divisors, whose sum is σ = 51878964. Its totient is φ = 51878962.

The previous prime is 51878947. The next prime is 51878977. The reversal of 51878963 is 36987815.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51878963 - 2⁴ = 51878947 is a prime.

It is not a weakly prime, because it can be changed into another prime (51878933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25939481 + 25939482.

It is an arithmetic number, because the mean of its divisors is an integer number (25939482).

Almost surely, 2^51878963 is an apocalyptic number.

51878963 is a deficient number, since it is larger than the sum of its proper divisors (1).

51878963 is an equidigital number, since it uses as much as digits as its factorization.

51878963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The square root of 51878963 is about 7202.7052556661. The cubic root of 51878963 is about 372.9612932927.

The spelling of 51878963 in words is "fifty-one million, eight hundred seventy-eight thousand, nine hundred sixty-three".