55893661 has 4 divisors (see below), whose sum is σ = 55969632. Its totient is φ = 55817692.

The previous prime is 55893659. The next prime is 55893737. The reversal of 55893661 is 16639855.

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 55893661 - 2¹ = 55893659 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 (55893361) 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, 36871 + ... + 38356.

It is an arithmetic number, because the mean of its divisors is an integer number (13992408).

Almost surely, 2^55893661 is an apocalyptic number.

It is an amenable number.

55893661 is a deficient number, since it is larger than the sum of its proper divisors (75971).

55893661 is an equidigital number, since it uses as much as digits as its factorization.

55893661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75970.

The product of its digits is 194400, while the sum is 43.

The square root of 55893661 is about 7476.2063240657. The cubic root of 55893661 is about 382.3439174076.

The spelling of 55893661 in words is "fifty-five million, eight hundred ninety-three thousand, six hundred sixty-one".