51993077 has 2 divisors, whose sum is σ = 51993078. Its totient is φ = 51993076.

The previous prime is 51993049. The next prime is 51993113. The reversal of 51993077 is 77039915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49014001 + 2979076 = 7001^2 + 1726^2 .

It is a cyclic number.

It is not a de Polignac number, because 51993077 - 2⁶ = 51993013 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 (51993037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25996538 + 25996539.

It is an arithmetic number, because the mean of its divisors is an integer number (25996539).

Almost surely, 2^51993077 is an apocalyptic number.

It is an amenable number.

51993077 is a deficient number, since it is larger than the sum of its proper divisors (1).

51993077 is an equidigital number, since it uses as much as digits as its factorization.

51993077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59535, while the sum is 41.

The square root of 51993077 is about 7210.6225112677. The cubic root of 51993077 is about 373.2345507320.

The spelling of 51993077 in words is "fifty-one million, nine hundred ninety-three thousand, seventy-seven".