53815380 has 48 divisors (see below), whose sum is σ = 155549184. Its totient is φ = 13887360.

The previous prime is 53815369. The next prime is 53815393. The reversal of 53815380 is 8351835.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12607 + ... + 16326.

It is an arithmetic number, because the mean of its divisors is an integer number (3240608).

Almost surely, 2^53815380 is an apocalyptic number.

It is an amenable number.

53815380 is an abundant number, since it is smaller than the sum of its proper divisors (101733804).

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

53815380 is a wasteful number, since it uses less digits than its factorization.

53815380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28976 (or 28974 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 53815380 is about 7335.8966732091. The cubic root of 53815380 is about 377.5450701272.

The spelling of 53815380 in words is "fifty-three million, eight hundred fifteen thousand, three hundred eighty".