53780855 has 8 divisors (see below), whose sum is σ = 64595232. Its totient is φ = 42985888.

The previous prime is 53780851. The next prime is 53780861. The reversal of 53780855 is 55808735.

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 53780855 - 2² = 53780851 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 (53780851) 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, 2174 + ... + 10596.

It is an arithmetic number, because the mean of its divisors is an integer number (8074404).

Almost surely, 2^53780855 is an apocalyptic number.

53780855 is a deficient number, since it is larger than the sum of its proper divisors (10814377).

53780855 is a wasteful number, since it uses less digits than its factorization.

53780855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9705.

The product of its (nonzero) digits is 168000, while the sum is 41.

The square root of 53780855 is about 7333.5431409381. The cubic root of 53780855 is about 377.4643154433.

The spelling of 53780855 in words is "fifty-three million, seven hundred eighty thousand, eight hundred fifty-five".