56550761 has 4 divisors (see below), whose sum is σ = 56612052. Its totient is φ = 56489472.

The previous prime is 56550751. The next prime is 56550773. The reversal of 56550761 is 16705565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16705565 = 5 ⋅3341113.

It can be written as a sum of positive squares in 2 ways, for example, as 3041536 + 53509225 = 1744^2 + 7315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56550761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56550701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29240 + ... + 31113.

It is an arithmetic number, because the mean of its divisors is an integer number (14153013).

Almost surely, 2^56550761 is an apocalyptic number.

It is an amenable number.

56550761 is a deficient number, since it is larger than the sum of its proper divisors (61291).

56550761 is an equidigital number, since it uses as much as digits as its factorization.

56550761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61290.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 56550761 is about 7520.0240026213. The cubic root of 56550761 is about 383.8363945156.

The spelling of 56550761 in words is "fifty-six million, five hundred fifty thousand, seven hundred sixty-one".