56042501 has 4 divisors (see below), whose sum is σ = 56831904. Its totient is φ = 55253100.

The previous prime is 56042491. The next prime is 56042537. The reversal of 56042501 is 10524065.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56042501 - 2¹⁸ = 55780357 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 (56042551) 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, 394595 + ... + 394736.

It is an arithmetic number, because the mean of its divisors is an integer number (14207976).

Almost surely, 2^56042501 is an apocalyptic number.

It is an amenable number.

56042501 is a deficient number, since it is larger than the sum of its proper divisors (789403).

56042501 is an equidigital number, since it uses as much as digits as its factorization.

56042501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789402.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 56042501 is about 7486.1539524645. The cubic root of 56042501 is about 382.6829995652.

Adding to 56042501 its reverse (10524065), we get a palindrome (66566566).

The spelling of 56042501 in words is "fifty-six million, forty-two thousand, five hundred one".