56194591 has 2 divisors, whose sum is σ = 56194592. Its totient is φ = 56194590.

The previous prime is 56194573. The next prime is 56194643. The reversal of 56194591 is 19549165.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56194591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56194291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28097295 + 28097296.

It is an arithmetic number, because the mean of its divisors is an integer number (28097296).

Almost surely, 2^56194591 is an apocalyptic number.

56194591 is a deficient number, since it is larger than the sum of its proper divisors (1).

56194591 is an equidigital number, since it uses as much as digits as its factorization.

56194591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 40.

The square root of 56194591 is about 7496.3051565421. The cubic root of 56194591 is about 383.0288661558.

The spelling of 56194591 in words is "fifty-six million, one hundred ninety-four thousand, five hundred ninety-one".