55767161 has 4 divisors (see below), whose sum is σ = 55782132. Its totient is φ = 55752192.

The previous prime is 55767137. The next prime is 55767167. The reversal of 55767161 is 16176755.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7728400 + 48038761 = 2780^2 + 6931^2 .

It is a cyclic number.

It is not a de Polignac number, because 55767161 - 2¹⁴ = 55750777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55767167) 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, 2981 + ... + 10973.

It is an arithmetic number, because the mean of its divisors is an integer number (13945533).

Almost surely, 2^55767161 is an apocalyptic number.

It is an amenable number.

55767161 is a deficient number, since it is larger than the sum of its proper divisors (14971).

55767161 is an equidigital number, since it uses as much as digits as its factorization.

55767161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14970.

The product of its digits is 44100, while the sum is 38.

The square root of 55767161 is about 7467.7413586706. The cubic root of 55767161 is about 382.0552559342.

The spelling of 55767161 in words is "fifty-five million, seven hundred sixty-seven thousand, one hundred sixty-one".