53278500 has 96 divisors (see below), whose sum is σ = 169303680. Its totient is φ = 12912000.

The previous prime is 53278499. The next prime is 53278513. The reversal of 53278500 is 587235.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14886 + ... + 18114.

It is an arithmetic number, because the mean of its divisors is an integer number (1763580).

Almost surely, 2^53278500 is an apocalyptic number.

53278500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53278500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84651840).

53278500 is an abundant number, since it is smaller than the sum of its proper divisors (116025180).

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

53278500 is a wasteful number, since it uses less digits than its factorization.

53278500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3262 (or 3250 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 53278500 is about 7299.2122862676. The cubic root of 53278500 is about 376.2853669620.

The spelling of 53278500 in words is "fifty-three million, two hundred seventy-eight thousand, five hundred".