55145893 has 8 divisors (see below), whose sum is σ = 60431616. Its totient is φ = 49905600.

The previous prime is 55145843. The next prime is 55145911. The reversal of 55145893 is 39854155.

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 55145893 - 2¹³ = 55137701 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 (55145803) 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, 8788 + ... + 13693.

It is an arithmetic number, because the mean of its divisors is an integer number (7553952).

Almost surely, 2^55145893 is an apocalyptic number.

It is an amenable number.

55145893 is a deficient number, since it is larger than the sum of its proper divisors (5285723).

55145893 is a wasteful number, since it uses less digits than its factorization.

55145893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22715.

The product of its digits is 108000, while the sum is 40.

The square root of 55145893 is about 7426.0280769736. The cubic root of 55145893 is about 380.6312062516.

The spelling of 55145893 in words is "fifty-five million, one hundred forty-five thousand, eight hundred ninety-three".