126099551 has 2 divisors, whose sum is σ = 126099552. Its totient is φ = 126099550.

The previous prime is 126099539. The next prime is 126099577. The reversal of 126099551 is 155990621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126099551 - 2⁶ = 126099487 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 (126099581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63049775 + 63049776.

It is an arithmetic number, because the mean of its divisors is an integer number (63049776).

Almost surely, 2^126099551 is an apocalyptic number.

126099551 is a deficient number, since it is larger than the sum of its proper divisors (1).

126099551 is an equidigital number, since it uses as much as digits as its factorization.

126099551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 38.

The square root of 126099551 is about 11229.4056387682. The cubic root of 126099551 is about 501.4617901742.

The spelling of 126099551 in words is "one hundred twenty-six million, ninety-nine thousand, five hundred fifty-one".