56278011 has 4 divisors (see below), whose sum is σ = 75037352. Its totient is φ = 37518672.

The previous prime is 56278003. The next prime is 56278021. The reversal of 56278011 is 11087265.

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

It is not a de Polignac number, because 56278011 - 2³ = 56278003 is a prime.

It is a super-2 number, since 2×56278011² = 6334429044232242, which contains 22 as substring.

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 56278011.

It is not an unprimeable number, because it can be changed into a prime (56278021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9379666 + ... + 9379671.

It is an arithmetic number, because the mean of its divisors is an integer number (18759338).

Almost surely, 2^56278011 is an apocalyptic number.

56278011 is a deficient number, since it is larger than the sum of its proper divisors (18759341).

56278011 is a wasteful number, since it uses less digits than its factorization.

56278011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18759340.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 56278011 is about 7501.8671675790. The cubic root of 56278011 is about 383.2183059197.

The spelling of 56278011 in words is "fifty-six million, two hundred seventy-eight thousand, eleven".