542550521 has 4 divisors (see below), whose sum is σ = 542976000. Its totient is φ = 542125044.

The previous prime is 542550511. The next prime is 542550539. The reversal of 542550521 is 125055245.

542550521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 542550521 - 2⁶ = 542550457 is a prime.

It is a super-2 number, since 2×542550521² = 588722135674742882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542550511) 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, 210821 + ... + 213378.

It is an arithmetic number, because the mean of its divisors is an integer number (135744000).

Almost surely, 2^542550521 is an apocalyptic number.

It is an amenable number.

542550521 is a deficient number, since it is larger than the sum of its proper divisors (425479).

542550521 is a wasteful number, since it uses less digits than its factorization.

542550521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425478.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 542550521 is about 23292.7139037082. The cubic root of 542550521 is about 815.6053419825.

The spelling of 542550521 in words is "five hundred forty-two million, five hundred fifty thousand, five hundred twenty-one".