126869551 has 2 divisors, whose sum is σ = 126869552. Its totient is φ = 126869550.

The previous prime is 126869537. The next prime is 126869557. The reversal of 126869551 is 155968621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126869551 - 2¹³ = 126861359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126869498 and 126869507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126869557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63434775 + 63434776.

It is an arithmetic number, because the mean of its divisors is an integer number (63434776).

Almost surely, 2^126869551 is an apocalyptic number.

126869551 is a deficient number, since it is larger than the sum of its proper divisors (1).

126869551 is an equidigital number, since it uses as much as digits as its factorization.

126869551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 43.

The square root of 126869551 is about 11263.6384441263. The cubic root of 126869551 is about 502.4804094571.

The spelling of 126869551 in words is "one hundred twenty-six million, eight hundred sixty-nine thousand, five hundred fifty-one".