55883509 has 8 divisors (see below), whose sum is σ = 61092000. Its totient is φ = 50696400.

The previous prime is 55883507. The next prime is 55883519. The reversal of 55883509 is 90538855.

It is a happy number.

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 55883509 - 2¹ = 55883507 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 (55883507) 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, 399 + ... + 10579.

It is an arithmetic number, because the mean of its divisors is an integer number (7636500).

Almost surely, 2^55883509 is an apocalyptic number.

It is an amenable number.

55883509 is a deficient number, since it is larger than the sum of its proper divisors (5208491).

55883509 is a wasteful number, since it uses less digits than its factorization.

55883509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10691.

The product of its (nonzero) digits is 216000, while the sum is 43.

The square root of 55883509 is about 7475.5273392584. The cubic root of 55883509 is about 382.3207675524.

The spelling of 55883509 in words is "fifty-five million, eight hundred eighty-three thousand, five hundred nine".