56547149 has 2 divisors, whose sum is σ = 56547150. Its totient is φ = 56547148.

The previous prime is 56547119. The next prime is 56547163. The reversal of 56547149 is 94174565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34597924 + 21949225 = 5882^2 + 4685^2 .

It is a cyclic number.

It is not a de Polignac number, because 56547149 - 2¹⁶ = 56481613 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56547109) 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, 28273574 + 28273575.

It is an arithmetic number, because the mean of its divisors is an integer number (28273575).

Almost surely, 2^56547149 is an apocalyptic number.

It is an amenable number.

56547149 is a deficient number, since it is larger than the sum of its proper divisors (1).

56547149 is an equidigital number, since it uses as much as digits as its factorization.

56547149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 41.

The square root of 56547149 is about 7519.7838399784. The cubic root of 56547149 is about 383.8282222320.

The spelling of 56547149 in words is "fifty-six million, five hundred forty-seven thousand, one hundred forty-nine".