56821419 has 48 divisors (see below), whose sum is σ = 92718080. Its totient is φ = 34642080.

The previous prime is 56821409. The next prime is 56821421. The reversal of 56821419 is 91412865.

56821419 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 56821419 - 2⁴ = 56821403 is a prime.

It is a super-2 number, since 2×56821419² = 6457347314347122, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56821409) 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 47 ways as a sum of consecutive naturals, for example, 142929 + ... + 143325.

Almost surely, 2^56821419 is an apocalyptic number.

56821419 is a deficient number, since it is larger than the sum of its proper divisors (35896661).

56821419 is a wasteful number, since it uses less digits than its factorization.

56821419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 450 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 56821419 is about 7537.9983417350. The cubic root of 56821419 is about 384.4477808642.

The spelling of 56821419 in words is "fifty-six million, eight hundred twenty-one thousand, four hundred nineteen".