56145643 has 2 divisors, whose sum is σ = 56145644. Its totient is φ = 56145642.

The previous prime is 56145629. The next prime is 56145647. The reversal of 56145643 is 34654165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56145643 - 2¹⁷ = 56014571 is a prime.

It is equal to p_3346549 and since 56145643 and 3346549 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 56145599 and 56145608.

It is not a weakly prime, because it can be changed into another prime (56145647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28072821 + 28072822.

It is an arithmetic number, because the mean of its divisors is an integer number (28072822).

Almost surely, 2^56145643 is an apocalyptic number.

56145643 is a deficient number, since it is larger than the sum of its proper divisors (1).

56145643 is an equidigital number, since it uses as much as digits as its factorization.

56145643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 34.

The square root of 56145643 is about 7493.0396368897. The cubic root of 56145643 is about 382.9176220969.

The spelling of 56145643 in words is "fifty-six million, one hundred forty-five thousand, six hundred forty-three".