51099299 has 2 divisors, whose sum is σ = 51099300. Its totient is φ = 51099298.

The previous prime is 51099277. The next prime is 51099311. The reversal of 51099299 is 99299015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51099299 - 2⁸ = 51099043 is a prime.

It is a super-2 number, since 2×51099299² = 5222276716582802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51099799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25549649 + 25549650.

It is an arithmetic number, because the mean of its divisors is an integer number (25549650).

Almost surely, 2^51099299 is an apocalyptic number.

51099299 is a deficient number, since it is larger than the sum of its proper divisors (1).

51099299 is an equidigital number, since it uses as much as digits as its factorization.

51099299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65610, while the sum is 44.

The square root of 51099299 is about 7148.3773683263. The cubic root of 51099299 is about 371.0835028293.

The spelling of 51099299 in words is "fifty-one million, ninety-nine thousand, two hundred ninety-nine".