552126021 has 8 divisors (see below), whose sum is σ = 739657824. Its totient is φ = 366339120.

The previous prime is 552126013. The next prime is 552126031. The reversal of 552126021 is 120621255.

It is a happy number.

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

It is not a de Polignac number, because 552126021 - 2³ = 552126013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 552125982 and 552126000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552126031) 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, 435486 + ... + 436751.

It is an arithmetic number, because the mean of its divisors is an integer number (92457228).

Almost surely, 2^552126021 is an apocalyptic number.

It is an amenable number.

552126021 is a deficient number, since it is larger than the sum of its proper divisors (187531803).

552126021 is a wasteful number, since it uses less digits than its factorization.

552126021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872451.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 552126021 is about 23497.3620008715. The cubic root of 552126021 is about 820.3756067267.

Adding to 552126021 its reverse (120621255), we get a palindrome (672747276).

The spelling of 552126021 in words is "five hundred fifty-two million, one hundred twenty-six thousand, twenty-one".