53780286 has 32 divisors (see below), whose sum is σ = 123349248. Its totient is φ = 15312960.

The previous prime is 53780263. The next prime is 53780291. The reversal of 53780286 is 68208735.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11101 + ... + 15191.

It is an arithmetic number, because the mean of its divisors is an integer number (3854664).

Almost surely, 2^53780286 is an apocalyptic number.

53780286 is an abundant number, since it is smaller than the sum of its proper divisors (69568962).

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

53780286 is a wasteful number, since it uses less digits than its factorization.

53780286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4416.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 53780286 is about 7333.5043464908. The cubic root of 53780286 is about 377.4629842512.

The spelling of 53780286 in words is "fifty-three million, seven hundred eighty thousand, two hundred eighty-six".