126552621 has 8 divisors (see below), whose sum is σ = 181716640. Its totient is φ = 77878512.

The previous prime is 126552619. The next prime is 126552649. The reversal of 126552621 is 126255621.

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

It is not a de Polignac number, because 126552621 - 2¹ = 126552619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126552611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1622431 + ... + 1622508.

It is an arithmetic number, because the mean of its divisors is an integer number (22714580).

Almost surely, 2^126552621 is an apocalyptic number.

It is an amenable number.

126552621 is a deficient number, since it is larger than the sum of its proper divisors (55164019).

126552621 is a wasteful number, since it uses less digits than its factorization.

126552621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3244955.

The product of its digits is 7200, while the sum is 30.

The square root of 126552621 is about 11249.5609247650. The cubic root of 126552621 is about 502.0616488575.

The spelling of 126552621 in words is "one hundred twenty-six million, five hundred fifty-two thousand, six hundred twenty-one".