56540149 has 4 divisors (see below), whose sum is σ = 56578336. Its totient is φ = 56501964.

The previous prime is 56540131. The next prime is 56540173. The reversal of 56540149 is 94104565.

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 56540149 - 2¹³ = 56531957 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 (56540119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16779 + ... + 19864.

It is an arithmetic number, because the mean of its divisors is an integer number (14144584).

Almost surely, 2^56540149 is an apocalyptic number.

It is an amenable number.

56540149 is a deficient number, since it is larger than the sum of its proper divisors (38187).

56540149 is a wasteful number, since it uses less digits than its factorization.

56540149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38186.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 56540149 is about 7519.3183866625. The cubic root of 56540149 is about 383.8123834822.

The spelling of 56540149 in words is "fifty-six million, five hundred forty thousand, one hundred forty-nine".