53520405 has 16 divisors (see below), whose sum is σ = 86482944. Its totient is φ = 28260800.

The previous prime is 53520391. The next prime is 53520419. The reversal of 53520405 is 50402535.

It is an interprime number because it is at equal distance from previous prime (53520391) and next prime (53520419).

It is not a de Polignac number, because 53520405 - 2⁵ = 53520373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16149 + ... + 19178.

It is an arithmetic number, because the mean of its divisors is an integer number (5405184).

Almost surely, 2^53520405 is an apocalyptic number.

It is an amenable number.

53520405 is a deficient number, since it is larger than the sum of its proper divisors (32962539).

53520405 is a wasteful number, since it uses less digits than its factorization.

53520405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35436.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 53520405 is about 7315.7641432731. The cubic root of 53520405 is about 376.8540009311.

The spelling of 53520405 in words is "fifty-three million, five hundred twenty thousand, four hundred five".