552515021 has 4 divisors (see below), whose sum is σ = 552593472. Its totient is φ = 552436572.

The previous prime is 552514987. The next prime is 552515023. The reversal of 552515021 is 120515255.

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 a cyclic number.

It is not a de Polignac number, because 552515021 - 2¹⁴ = 552498637 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 (552515023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27491 + ... + 43136.

It is an arithmetic number, because the mean of its divisors is an integer number (138148368).

Almost surely, 2^552515021 is an apocalyptic number.

It is an amenable number.

552515021 is a deficient number, since it is larger than the sum of its proper divisors (78451).

552515021 is an equidigital number, since it uses as much as digits as its factorization.

552515021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78450.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 552515021 is about 23505.6380683444. The cubic root of 552515021 is about 820.5682265161.

The spelling of 552515021 in words is "five hundred fifty-two million, five hundred fifteen thousand, twenty-one".