53387208 has 256 divisors, whose sum is σ = 188006400. Its totient is φ = 13685760.

The previous prime is 53387183. The next prime is 53387221. The reversal of 53387208 is 80278335.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 796791 + ... + 796857.

It is an arithmetic number, because the mean of its divisors is an integer number (734400).

Almost surely, 2^53387208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53387208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94003200).

53387208 is an abundant number, since it is smaller than the sum of its proper divisors (134619192).

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

53387208 is a wasteful number, since it uses less digits than its factorization.

53387208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 53387208 is about 7306.6550486526. The cubic root of 53387208 is about 376.5411139051.

The spelling of 53387208 in words is "fifty-three million, three hundred eighty-seven thousand, two hundred eight".