126633251 has 2 divisors, whose sum is σ = 126633252. Its totient is φ = 126633250.

The previous prime is 126633229. The next prime is 126633253. The reversal of 126633251 is 152336621.

It is a strong prime.

It is an emirp because it is prime and its reverse (152336621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126633251 is a prime.

Together with 126633253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126633253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63316625 + 63316626.

It is an arithmetic number, because the mean of its divisors is an integer number (63316626).

Almost surely, 2^126633251 is an apocalyptic number.

126633251 is a deficient number, since it is larger than the sum of its proper divisors (1).

126633251 is an equidigital number, since it uses as much as digits as its factorization.

126633251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

The square root of 126633251 is about 11253.1440495534. The cubic root of 126633251 is about 502.1682517769.

Adding to 126633251 its reverse (152336621), we get a palindrome (278969872).

The spelling of 126633251 in words is "one hundred twenty-six million, six hundred thirty-three thousand, two hundred fifty-one".