53378638 has 16 divisors (see below), whose sum is σ = 86340240. Its totient is φ = 24667200.

The previous prime is 53378603. The next prime is 53378639. The reversal of 53378638 is 83687335.

It is a junction number, because it is equal to n+sod(n) for n = 53378594 and 53378603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53378639) 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, 15573 + ... + 18688.

It is an arithmetic number, because the mean of its divisors is an integer number (5396265).

Almost surely, 2^53378638 is an apocalyptic number.

53378638 is a deficient number, since it is larger than the sum of its proper divisors (32961602).

53378638 is a wasteful number, since it uses less digits than its factorization.

53378638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34323.

The product of its digits is 362880, while the sum is 43.

The square root of 53378638 is about 7306.0685734532. The cubic root of 53378638 is about 376.5209646962.

The spelling of 53378638 in words is "fifty-three million, three hundred seventy-eight thousand, six hundred thirty-eight".