55802661 has 4 divisors (see below), whose sum is σ = 74403552. Its totient is φ = 37201772.

The previous prime is 55802651. The next prime is 55802689. The reversal of 55802661 is 16620855.

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 55802661 - 2¹⁰ = 55801637 is a prime.

It is a super-2 number, since 2×55802661² = 6227873949361842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55802611) 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, 9300441 + ... + 9300446.

It is an arithmetic number, because the mean of its divisors is an integer number (18600888).

Almost surely, 2^55802661 is an apocalyptic number.

It is an amenable number.

55802661 is a deficient number, since it is larger than the sum of its proper divisors (18600891).

55802661 is a wasteful number, since it uses less digits than its factorization.

55802661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18600890.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 55802661 is about 7470.1178705560. The cubic root of 55802661 is about 382.1363077242.

The spelling of 55802661 in words is "fifty-five million, eight hundred two thousand, six hundred sixty-one".