126224551 has 2 divisors, whose sum is σ = 126224552. Its totient is φ = 126224550.

The previous prime is 126224537. The next prime is 126224561. The reversal of 126224551 is 155422621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126224551 - 2⁹ = 126224039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126224521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63112275 + 63112276.

It is an arithmetic number, because the mean of its divisors is an integer number (63112276).

Almost surely, 2^126224551 is an apocalyptic number.

126224551 is a deficient number, since it is larger than the sum of its proper divisors (1).

126224551 is an equidigital number, since it uses as much as digits as its factorization.

126224551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 28.

The square root of 126224551 is about 11234.9700044103. The cubic root of 126224551 is about 501.6274318507.

The spelling of 126224551 in words is "one hundred twenty-six million, two hundred twenty-four thousand, five hundred fifty-one".