52778236 has 24 divisors (see below), whose sum is σ = 106531040. Its totient is φ = 22410432.

The previous prime is 52778233. The next prime is 52778239. The reversal of 52778236 is 63287725.

It is an interprime number because it is at equal distance from previous prime (52778233) and next prime (52778239).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52778233) 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, 5595 + ... + 11698.

Almost surely, 2^52778236 is an apocalyptic number.

It is an amenable number.

52778236 is an abundant number, since it is smaller than the sum of its proper divisors (53752804).

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

52778236 is a wasteful number, since it uses less digits than its factorization.

52778236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17413 (or 17411 counting only the distinct ones).

The product of its digits is 141120, while the sum is 40.

The square root of 52778236 is about 7264.8631095156. The cubic root of 52778236 is about 375.1039380039.

The spelling of 52778236 in words is "fifty-two million, seven hundred seventy-eight thousand, two hundred thirty-six".