126629553 has 4 divisors (see below), whose sum is σ = 168839408. Its totient is φ = 84419700.

The previous prime is 126629543. The next prime is 126629563. The reversal of 126629553 is 355926621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (126629543) and next prime (126629563).

It is not a de Polignac number, because 126629553 - 2⁴ = 126629537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126629543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21104923 + ... + 21104928.

It is an arithmetic number, because the mean of its divisors is an integer number (42209852).

Almost surely, 2^126629553 is an apocalyptic number.

It is an amenable number.

126629553 is a deficient number, since it is larger than the sum of its proper divisors (42209855).

126629553 is an equidigital number, since it uses as much as digits as its factorization.

126629553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42209854.

The product of its digits is 97200, while the sum is 39.

The square root of 126629553 is about 11252.9797387181. The cubic root of 126629553 is about 502.1633635498.

The spelling of 126629553 in words is "one hundred twenty-six million, six hundred twenty-nine thousand, five hundred fifty-three".