56945149 has 4 divisors (see below), whose sum is σ = 57393664. Its totient is φ = 56496636.

The previous prime is 56945143. The next prime is 56945159. The reversal of 56945149 is 94154965.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56945149 - 2⁵ = 56945117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56945143) 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 in 3 ways as a sum of consecutive naturals, for example, 224067 + ... + 224320.

It is an arithmetic number, because the mean of its divisors is an integer number (14348416).

Almost surely, 2^56945149 is an apocalyptic number.

It is an amenable number.

56945149 is a deficient number, since it is larger than the sum of its proper divisors (448515).

56945149 is a wasteful number, since it uses less digits than its factorization.

56945149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448514.

The product of its digits is 194400, while the sum is 43.

The square root of 56945149 is about 7546.2009647239. The cubic root of 56945149 is about 384.7266266460.

The spelling of 56945149 in words is "fifty-six million, nine hundred forty-five thousand, one hundred forty-nine".