55758661 has 8 divisors (see below), whose sum is σ = 63794880. Its totient is φ = 47740128.

The previous prime is 55758617. The next prime is 55758671. The reversal of 55758661 is 16685755.

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 55758661 - 2¹³ = 55750469 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 (55758611) 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, 3225 + ... + 11041.

It is an arithmetic number, because the mean of its divisors is an integer number (7974360).

Almost surely, 2^55758661 is an apocalyptic number.

It is an amenable number.

55758661 is a deficient number, since it is larger than the sum of its proper divisors (8036219).

55758661 is a wasteful number, since it uses less digits than its factorization.

55758661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8843.

The product of its digits is 252000, while the sum is 43.

The square root of 55758661 is about 7467.1722224682. The cubic root of 55758661 is about 382.0358440640.

The spelling of 55758661 in words is "fifty-five million, seven hundred fifty-eight thousand, six hundred sixty-one".