51550699 has 2 divisors, whose sum is σ = 51550700. Its totient is φ = 51550698.

The previous prime is 51550693. The next prime is 51550711. The reversal of 51550699 is 99605515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51550699 - 2¹⁹ = 51026411 is a prime.

It is a Chen prime.

It is equal to p_3088489 and since 51550699 and 3088489 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (51550693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25775349 + 25775350.

It is an arithmetic number, because the mean of its divisors is an integer number (25775350).

Almost surely, 2^51550699 is an apocalyptic number.

51550699 is a deficient number, since it is larger than the sum of its proper divisors (1).

51550699 is an equidigital number, since it uses as much as digits as its factorization.

51550699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60750, while the sum is 40.

The square root of 51550699 is about 7179.8815449839. The cubic root of 51550699 is about 372.1729910912.

The spelling of 51550699 in words is "fifty-one million, five hundred fifty thousand, six hundred ninety-nine".