53396378 has 12 divisors (see below), whose sum is σ = 93171402. Its totient is φ = 22884120.

The previous prime is 53396359. The next prime is 53396381. The reversal of 53396378 is 87369335.

It can be written as a sum of positive squares in only one way, i.e., 52896529 + 499849 = 7273^2 + 707^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 272333 + ... + 272528.

Almost surely, 2^53396378 is an apocalyptic number.

53396378 is a deficient number, since it is larger than the sum of its proper divisors (39775024).

53396378 is a wasteful number, since it uses less digits than its factorization.

53396378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544877 (or 544870 counting only the distinct ones).

The product of its digits is 408240, while the sum is 44.

The square root of 53396378 is about 7307.2825318308. The cubic root of 53396378 is about 376.5626714059.

The spelling of 53396378 in words is "fifty-three million, three hundred ninety-six thousand, three hundred seventy-eight".