53405508 has 24 divisors (see below), whose sum is σ = 134198848. Its totient is φ = 16432416.

The previous prime is 53405507. The next prime is 53405509. The reversal of 53405508 is 80550435.

It is an interprime number because it is at equal distance from previous prime (53405507) and next prime (53405509).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (53405507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171016 + ... + 171327.

Almost surely, 2^53405508 is an apocalyptic number.

It is an amenable number.

53405508 is an abundant number, since it is smaller than the sum of its proper divisors (80793340).

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

53405508 is a wasteful number, since it uses less digits than its factorization.

53405508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342363 (or 342361 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 53405508 is about 7307.9072243701. The cubic root of 53405508 is about 376.5841324200.

The spelling of 53405508 in words is "fifty-three million, four hundred five thousand, five hundred eight".