55940089 has 8 divisors (see below), whose sum is σ = 57835008. Its totient is φ = 54050880.

The previous prime is 55940077. The next prime is 55940099. The reversal of 55940089 is 98004955.

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 55940089 - 2⁵ = 55940057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55940099) 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, 29364 + ... + 31210.

It is an arithmetic number, because the mean of its divisors is an integer number (7229376).

Almost surely, 2^55940089 is an apocalyptic number.

It is an amenable number.

55940089 is a deficient number, since it is larger than the sum of its proper divisors (1894919).

55940089 is a wasteful number, since it uses less digits than its factorization.

55940089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 55940089 is about 7479.3107302745. The cubic root of 55940089 is about 382.4497526089.

The spelling of 55940089 in words is "fifty-five million, nine hundred forty thousand, eighty-nine".