542623547 has 2 divisors, whose sum is σ = 542623548. Its totient is φ = 542623546.

The previous prime is 542623517. The next prime is 542623559. The reversal of 542623547 is 745326245.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 542623547 - 2¹⁶ = 542558011 is a prime.

It is a super-2 number, since 2×542623547² = 588880627517722418, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 542623547.

It is not a weakly prime, because it can be changed into another prime (542623517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271311773 + 271311774.

It is an arithmetic number, because the mean of its divisors is an integer number (271311774).

Almost surely, 2^542623547 is an apocalyptic number.

542623547 is a deficient number, since it is larger than the sum of its proper divisors (1).

542623547 is an equidigital number, since it uses as much as digits as its factorization.

542623547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 38.

The square root of 542623547 is about 23294.2814227012. The cubic root of 542623547 is about 815.6419331824.

The spelling of 542623547 in words is "five hundred forty-two million, six hundred twenty-three thousand, five hundred forty-seven".