53330778 has 16 divisors (see below), whose sum is σ = 118512960. Its totient is φ = 17776908.

The previous prime is 53330743. The next prime is 53330789. The reversal of 53330778 is 87703335.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 493750 + ... + 493857.

It is an arithmetic number, because the mean of its divisors is an integer number (7407060).

Almost surely, 2^53330778 is an apocalyptic number.

53330778 is an abundant number, since it is smaller than the sum of its proper divisors (65182182).

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

53330778 is a wasteful number, since it uses less digits than its factorization.

53330778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987618 (or 987612 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 53330778 is about 7302.7924795930. The cubic root of 53330778 is about 376.4083998046.

The spelling of 53330778 in words is "fifty-three million, three hundred thirty thousand, seven hundred seventy-eight".