55602161 has 4 divisors (see below), whose sum is σ = 56432112. Its totient is φ = 54772212.

The previous prime is 55602143. The next prime is 55602163. The reversal of 55602161 is 16120655.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16120655 = 5 ⋅3224131.

It is a cyclic number.

It is not a de Polignac number, because 55602161 - 2⁶ = 55602097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55602161.

It is not an unprimeable number, because it can be changed into a prime (55602163) 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, 414875 + ... + 415008.

It is an arithmetic number, because the mean of its divisors is an integer number (14108028).

Almost surely, 2^55602161 is an apocalyptic number.

It is an amenable number.

55602161 is a deficient number, since it is larger than the sum of its proper divisors (829951).

55602161 is an equidigital number, since it uses as much as digits as its factorization.

55602161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829950.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 55602161 is about 7456.6856578509. The cubic root of 55602161 is about 381.6780841937.

The spelling of 55602161 in words is "fifty-five million, six hundred two thousand, one hundred sixty-one".