56464019 has 4 divisors (see below), whose sum is σ = 56532960. Its totient is φ = 56395080.

The previous prime is 56463983. The next prime is 56464033. The reversal of 56464019 is 91046465.

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

It is a cyclic number.

It is not a de Polignac number, because 56464019 - 2¹⁶ = 56398483 is a prime.

It is a super-2 number, since 2×56464019² = 6376370883264722, 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 56464019.

It is not an unprimeable number, because it can be changed into a prime (56464039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33227 + ... + 34884.

It is an arithmetic number, because the mean of its divisors is an integer number (14133240).

Almost surely, 2^56464019 is an apocalyptic number.

56464019 is a deficient number, since it is larger than the sum of its proper divisors (68941).

56464019 is an equidigital number, since it uses as much as digits as its factorization.

56464019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68940.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 56464019 is about 7514.2543874958. The cubic root of 56464019 is about 383.6400412816.

The spelling of 56464019 in words is "fifty-six million, four hundred sixty-four thousand, nineteen".