53497808 has 120 divisors (see below), whose sum is σ = 135069480. Its totient is φ = 20321280.

The previous prime is 53497789. The next prime is 53497817. The reversal of 53497808 is 80879435.

It can be written as a sum of positive squares in 4 ways, for example, as 906304 + 52591504 = 952^2 + 7252^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 295478 + ... + 295658.

It is an arithmetic number, because the mean of its divisors is an integer number (1125579).

Almost surely, 2^53497808 is an apocalyptic number.

53497808 is a gapful number since it is divisible by the number (58) 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 53497808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67534740).

53497808 is an abundant number, since it is smaller than the sum of its proper divisors (81571672).

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

53497808 is a wasteful number, since it uses less digits than its factorization.

53497808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 53497808 is about 7314.2195755938. The cubic root of 53497808 is about 376.8009559375.

The spelling of 53497808 in words is "fifty-three million, four hundred ninety-seven thousand, eight hundred eight".