56454493 has 2 divisors, whose sum is σ = 56454494. Its totient is φ = 56454492.

The previous prime is 56454469. The next prime is 56454511. The reversal of 56454493 is 39445465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33154564 + 23299929 = 5758^2 + 4827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56454493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56454413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28227246 + 28227247.

It is an arithmetic number, because the mean of its divisors is an integer number (28227247).

Almost surely, 2^56454493 is an apocalyptic number.

It is an amenable number.

56454493 is a deficient number, since it is larger than the sum of its proper divisors (1).

56454493 is an equidigital number, since it uses as much as digits as its factorization.

56454493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 40.

The square root of 56454493 is about 7513.6204988008. The cubic root of 56454493 is about 383.6184655322.

Subtracting from 56454493 its reverse (39445465), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 56454493 in words is "fifty-six million, four hundred fifty-four thousand, four hundred ninety-three".