53430405 has 64 divisors (see below), whose sum is σ = 106375680. Its totient is φ = 22339584.

The previous prime is 53430401. The next prime is 53430409. The reversal of 53430405 is 50403435.

53430405 = 2307² + 2308² + ... + 2316².

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53430401) and next prime (53430409).

It is not a de Polignac number, because 53430405 - 2² = 53430401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53430401) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65641 + ... + 66449.

It is an arithmetic number, because the mean of its divisors is an integer number (1662120).

Almost surely, 2^53430405 is an apocalyptic number.

It is an amenable number.

53430405 is a deficient number, since it is larger than the sum of its proper divisors (52945275).

53430405 is a wasteful number, since it uses less digits than its factorization.

53430405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878.

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 53430405 is about 7309.6104547370. The cubic root of 53430405 is about 376.6426429801.

It can be divided in two parts, 53430 and 405, that added together give a palindrome (53835).

The spelling of 53430405 in words is "fifty-three million, four hundred thirty thousand, four hundred five".