542253647 has 4 divisors (see below), whose sum is σ = 583965480. Its totient is φ = 500541816.

The previous prime is 542253631. The next prime is 542253661. The reversal of 542253647 is 746352245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 542253647 - 2⁴ = 542253631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 542253647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542253667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20855897 + ... + 20855922.

It is an arithmetic number, because the mean of its divisors is an integer number (145991370).

Almost surely, 2^542253647 is an apocalyptic number.

542253647 is a deficient number, since it is larger than the sum of its proper divisors (41711833).

542253647 is a wasteful number, since it uses less digits than its factorization.

542253647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41711832.

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

The square root of 542253647 is about 23286.3403522323. The cubic root of 542253647 is about 815.4565532598.

The spelling of 542253647 in words is "five hundred forty-two million, two hundred fifty-three thousand, six hundred forty-seven".