55465661 has 8 divisors (see below), whose sum is σ = 58779000. Its totient is φ = 52245760.

The previous prime is 55465651. The next prime is 55465681. The reversal of 55465661 is 16656455.

It can be written as a sum of positive squares in 4 ways, for example, as 2088025 + 53377636 = 1445^2 + 7306^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55465661 - 2¹⁰ = 55464637 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 (55465651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22136 + ... + 24513.

It is an arithmetic number, because the mean of its divisors is an integer number (7347375).

Almost surely, 2^55465661 is an apocalyptic number.

It is an amenable number.

55465661 is a deficient number, since it is larger than the sum of its proper divisors (3313339).

55465661 is a wasteful number, since it uses less digits than its factorization.

55465661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46719.

The product of its digits is 108000, while the sum is 38.

The square root of 55465661 is about 7447.5271734986. The cubic root of 55465661 is about 381.3654959227.

The spelling of 55465661 in words is "fifty-five million, four hundred sixty-five thousand, six hundred sixty-one".