53125405 has 8 divisors (see below), whose sum is σ = 64005984. Its totient is φ = 42330000.

The previous prime is 53125403. The next prime is 53125409. The reversal of 53125405 is 50452135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53125405 - 2¹ = 53125403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53125405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53125403) 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, 19911 + ... + 22420.

It is an arithmetic number, because the mean of its divisors is an integer number (8000748).

Almost surely, 2^53125405 is an apocalyptic number.

It is an amenable number.

53125405 is a deficient number, since it is larger than the sum of its proper divisors (10880579).

53125405 is a wasteful number, since it uses less digits than its factorization.

53125405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42587.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 53125405 is about 7288.7176512745. The cubic root of 53125405 is about 375.9246043371.

The spelling of 53125405 in words is "fifty-three million, one hundred twenty-five thousand, four hundred five".