56273987 has 16 divisors (see below), whose sum is σ = 70329600. Its totient is φ = 43743840.

The previous prime is 56273977. The next prime is 56273989. The reversal of 56273987 is 78937265.

56273987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56273987 - 2⁶ = 56273923 is a prime.

It is a super-2 number, since 2×56273987² = 6333523225752338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56273989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50189 + ... + 51297.

It is an arithmetic number, because the mean of its divisors is an integer number (4395600).

Almost surely, 2^56273987 is an apocalyptic number.

56273987 is a deficient number, since it is larger than the sum of its proper divisors (14055613).

56273987 is a wasteful number, since it uses less digits than its factorization.

56273987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786.

The product of its digits is 635040, while the sum is 47.

The square root of 56273987 is about 7501.5989628878. The cubic root of 56273987 is about 383.2091720550.

Subtracting 56273987 from its reverse (78937265), we obtain a triangular number (22663278 = T₆₇₃₂).

The spelling of 56273987 in words is "fifty-six million, two hundred seventy-three thousand, nine hundred eighty-seven".