53567778 has 32 divisors (see below), whose sum is σ = 117262080. Its totient is φ = 16178960.

The previous prime is 53567753. The next prime is 53567779. The reversal of 53567778 is 87776535.

It is not an unprimeable number, because it can be changed into a prime (53567779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21733 + ... + 24071.

It is an arithmetic number, because the mean of its divisors is an integer number (3664440).

Almost surely, 2^53567778 is an apocalyptic number.

53567778 is an abundant number, since it is smaller than the sum of its proper divisors (63694302).

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

53567778 is a wasteful number, since it uses less digits than its factorization.

53567778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702.

The product of its digits is 1234800, while the sum is 48.

The square root of 53567778 is about 7319.0011613607. The cubic root of 53567778 is about 376.9651575377.

It can be divided in two parts, 53567 and 778, that added together give a palindrome (54345).

The spelling of 53567778 in words is "fifty-three million, five hundred sixty-seven thousand, seven hundred seventy-eight".