542355521 has 2 divisors, whose sum is σ = 542355522. Its totient is φ = 542355520.

The previous prime is 542355511. The next prime is 542355547. The reversal of 542355521 is 125553245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 530795521 + 11560000 = 23039^2 + 3400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542355521 is a prime.

It is a super-2 number, since 2×542355521² = 588299022318362882, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (542355511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271177760 + 271177761.

It is an arithmetic number, because the mean of its divisors is an integer number (271177761).

Almost surely, 2^542355521 is an apocalyptic number.

It is an amenable number.

542355521 is a deficient number, since it is larger than the sum of its proper divisors (1).

542355521 is an equidigital number, since it uses as much as digits as its factorization.

542355521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30000, while the sum is 32.

The square root of 542355521 is about 23288.5276692195. The cubic root of 542355521 is about 815.5076170743.

The spelling of 542355521 in words is "five hundred forty-two million, three hundred fifty-five thousand, five hundred twenty-one".