56763021 has 12 divisors (see below), whose sum is σ = 88040832. Its totient is φ = 32435928.

The previous prime is 56763019. The next prime is 56763023. The reversal of 56763021 is 12036765.

It is an interprime number because it is at equal distance from previous prime (56763019) and next prime (56763023).

It is not a de Polignac number, because 56763021 - 2¹ = 56763019 is a prime.

It is a super-3 number, since 3×56763021³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56763021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56763023) 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 11 ways as a sum of consecutive naturals, for example, 192925 + ... + 193218.

It is an arithmetic number, because the mean of its divisors is an integer number (7336736).

Almost surely, 2^56763021 is an apocalyptic number.

It is an amenable number.

56763021 is a deficient number, since it is larger than the sum of its proper divisors (31277811).

56763021 is a wasteful number, since it uses less digits than its factorization.

56763021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386160 (or 386153 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 56763021 is about 7534.1237712159. The cubic root of 56763021 is about 384.3160307977.

Adding to 56763021 its reverse (12036765), we get a palindrome (68799786).

The spelling of 56763021 in words is "fifty-six million, seven hundred sixty-three thousand, twenty-one".