55541778 has 8 divisors (see below), whose sum is σ = 111083568. Its totient is φ = 18513924.

The previous prime is 55541753. The next prime is 55541789. The reversal of 55541778 is 87714555.

It is a sphenic number, since it is the product of 3 distinct primes.

55541778 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4628476 + ... + 4628487.

It is an arithmetic number, because the mean of its divisors is an integer number (13885446).

Almost surely, 2^55541778 is an apocalyptic number.

55541778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55541778 is a wasteful number, since it uses less digits than its factorization.

55541778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9256968.

The product of its digits is 196000, while the sum is 42.

The square root of 55541778 is about 7452.6356411675. The cubic root of 55541778 is about 381.5398688485.

The spelling of 55541778 in words is "fifty-five million, five hundred forty-one thousand, seven hundred seventy-eight".