126956551 has 8 divisors (see below), whose sum is σ = 129674160. Its totient is φ = 124267392.

The previous prime is 126956539. The next prime is 126956567. The reversal of 126956551 is 155659621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126956551 - 2¹³ = 126948359 is a prime.

It is a super-2 number, since 2×126956551² = 32235931683631202, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126953551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2031 + ... + 16063.

It is an arithmetic number, because the mean of its divisors is an integer number (16209270).

Almost surely, 2^126956551 is an apocalyptic number.

126956551 is a deficient number, since it is larger than the sum of its proper divisors (2717609).

126956551 is a wasteful number, since it uses less digits than its factorization.

126956551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14225.

The product of its digits is 81000, while the sum is 40.

The square root of 126956551 is about 11267.4997670291. The cubic root of 126956551 is about 502.5952408107.

The spelling of 126956551 in words is "one hundred twenty-six million, nine hundred fifty-six thousand, five hundred fifty-one".