542623517 has 2 divisors, whose sum is σ = 542623518. Its totient is φ = 542623516.

The previous prime is 542623513. The next prime is 542623547. The reversal of 542623517 is 715326245.

542623517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 540376516 + 2247001 = 23246^2 + 1499^2 .

It is a cyclic number.

It is not a de Polignac number, because 542623517 - 2² = 542623513 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542623513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271311758 + 271311759.

It is an arithmetic number, because the mean of its divisors is an integer number (271311759).

Almost surely, 2^542623517 is an apocalyptic number.

It is an amenable number.

542623517 is a deficient number, since it is larger than the sum of its proper divisors (1).

542623517 is an equidigital number, since it uses as much as digits as its factorization.

542623517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 35.

The square root of 542623517 is about 23294.2807787663. The cubic root of 542623517 is about 815.6419181510.

The spelling of 542623517 in words is "five hundred forty-two million, six hundred twenty-three thousand, five hundred seventeen".