53400405 has 8 divisors (see below), whose sum is σ = 85440672. Its totient is φ = 28480208.

The previous prime is 53400377. The next prime is 53400433. The reversal of 53400405 is 50400435.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53400377) and next prime (53400433).

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

It is a cyclic number.

It is not a de Polignac number, because 53400405 - 2⁶ = 53400341 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1779999 + ... + 1780028.

It is an arithmetic number, because the mean of its divisors is an integer number (10680084).

Almost surely, 2^53400405 is an apocalyptic number.

It is an amenable number.

53400405 is a deficient number, since it is larger than the sum of its proper divisors (32040267).

53400405 is a wasteful number, since it uses less digits than its factorization.

53400405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3560035.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 53400405 is about 7307.5580736659. The cubic root of 53400405 is about 376.5721375896.

The spelling of 53400405 in words is "fifty-three million, four hundred thousand, four hundred five".