53255664 has 160 divisors (see below), whose sum is σ = 190702080. Its totient is φ = 13824000.

The previous prime is 53255641. The next prime is 53255677. The reversal of 53255664 is 46655235.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 32464 + ... + 34064.

It is an arithmetic number, because the mean of its divisors is an integer number (1191888).

Almost surely, 2^53255664 is an apocalyptic number.

53255664 is a gapful number since it is divisible by the number (54) 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 53255664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95351040).

53255664 is an abundant number, since it is smaller than the sum of its proper divisors (137446416).

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

53255664 is a wasteful number, since it uses less digits than its factorization.

53255664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636 (or 1624 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 53255664 is about 7297.6478402291. The cubic root of 53255664 is about 376.2315986777.

The spelling of 53255664 in words is "fifty-three million, two hundred fifty-five thousand, six hundred sixty-four".