53402453 has 4 divisors (see below), whose sum is σ = 57510348. Its totient is φ = 49294560.

The previous prime is 53402443. The next prime is 53402471. The reversal of 53402453 is 35420435.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6589489 + 46812964 = 2567^2 + 6842^2 .

It is a cyclic number.

It is not a de Polignac number, because 53402453 - 2⁸ = 53402197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53402443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2053928 + ... + 2053953.

It is an arithmetic number, because the mean of its divisors is an integer number (14377587).

Almost surely, 2^53402453 is an apocalyptic number.

It is an amenable number.

53402453 is a deficient number, since it is larger than the sum of its proper divisors (4107895).

53402453 is a wasteful number, since it uses less digits than its factorization.

53402453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4107894.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 53402453 is about 7307.6982012122. The cubic root of 53402453 is about 376.5769515973.

Adding to 53402453 its reverse (35420435), we get a palindrome (88822888).

The spelling of 53402453 in words is "fifty-three million, four hundred two thousand, four hundred fifty-three".