56542903 has 2 divisors, whose sum is σ = 56542904. Its totient is φ = 56542902.

The previous prime is 56542877. The next prime is 56542921. The reversal of 56542903 is 30924565.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56542903 is a prime.

It is a super-4 number, since 4×56542903⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56542933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28271451 + 28271452.

It is an arithmetic number, because the mean of its divisors is an integer number (28271452).

Almost surely, 2^56542903 is an apocalyptic number.

56542903 is a deficient number, since it is larger than the sum of its proper divisors (1).

56542903 is an equidigital number, since it uses as much as digits as its factorization.

56542903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 56542903 is about 7519.5015127334. The cubic root of 56542903 is about 383.8186150549.

The spelling of 56542903 in words is "fifty-six million, five hundred forty-two thousand, nine hundred three".