126551237 has 2 divisors, whose sum is σ = 126551238. Its totient is φ = 126551236.

The previous prime is 126551219. The next prime is 126551287. The reversal of 126551237 is 732155621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126540001 + 11236 = 11249^2 + 106^2 .

It is a cyclic number.

It is not a de Polignac number, because 126551237 - 2⁸ = 126550981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126551287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63275618 + 63275619.

It is an arithmetic number, because the mean of its divisors is an integer number (63275619).

Almost surely, 2^126551237 is an apocalyptic number.

It is an amenable number.

126551237 is a deficient number, since it is larger than the sum of its proper divisors (1).

126551237 is an equidigital number, since it uses as much as digits as its factorization.

126551237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 32.

The square root of 126551237 is about 11249.4994110849. The cubic root of 126551237 is about 502.0598186417.

It can be divided in two parts, 1265 and 51237, that multiplied together give a triangular number (64814805 = T₁₁₃₈₅).

The spelling of 126551237 in words is "one hundred twenty-six million, five hundred fifty-one thousand, two hundred thirty-seven".