51977087 has 2 divisors, whose sum is σ = 51977088. Its totient is φ = 51977086.

The previous prime is 51977083. The next prime is 51977113. The reversal of 51977087 is 78077915.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51977087 - 2² = 51977083 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 (51977083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25988543 + 25988544.

It is an arithmetic number, because the mean of its divisors is an integer number (25988544).

Almost surely, 2^51977087 is an apocalyptic number.

51977087 is a deficient number, since it is larger than the sum of its proper divisors (1).

51977087 is an equidigital number, since it uses as much as digits as its factorization.

51977087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 123480, while the sum is 44.

The square root of 51977087 is about 7209.5136451775. The cubic root of 51977087 is about 373.1962851736.

The spelling of 51977087 in words is "fifty-one million, nine hundred seventy-seven thousand, eighty-seven".