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542505077 = 1648132917

542505077 has 4 divisors (see below), whose sum is σ = 542554476. Its totient is φ = 542455680.

The previous prime is 542505031. The next prime is 542505079. The reversal of 542505077 is 770505245.

It is a happy number.

542505077 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 brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 770505245 = 5154101049.

It can be written as a sum of positive squares in 2 ways, for example, as 255168676 + 287336401 = 15974^2 + 16951^2 .

It is a cyclic number.

It is not a de Polignac number, because 542505077 - 214 = 542488693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542505079) 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, 23 + ... + 32939.

It is an arithmetic number, because the mean of its divisors is an integer number (135638619).

Almost surely, 2542505077 is an apocalyptic number.

It is an amenable number.

542505077 is a deficient number, since it is larger than the sum of its proper divisors (49399).

542505077 is a wasteful number, since it uses less digits than its factorization.

542505077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49398.

The product of its (nonzero) digits is 49000, while the sum is 35.

The square root of 542505077 is about 23291.7383851013. The cubic root of 542505077 is about 815.5825696614.

The spelling of 542505077 in words is "five hundred forty-two million, five hundred five thousand, seventy-seven".

Divisors: 1 16481 32917 542505077