53402653 has 4 divisors (see below), whose sum is σ = 53451580. Its totient is φ = 53353728.

The previous prime is 53402617. The next prime is 53402663. The reversal of 53402653 is 35620435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35620435 = 5 ⋅7124087.

It can be written as a sum of positive squares in 2 ways, for example, as 2679769 + 50722884 = 1637^2 + 7122^2 .

It is a cyclic number.

It is not a de Polignac number, because 53402653 - 2¹³ = 53394461 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 (53402663) 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, 22788 + ... + 25021.

It is an arithmetic number, because the mean of its divisors is an integer number (13362895).

Almost surely, 2^53402653 is an apocalyptic number.

It is an amenable number.

53402653 is a deficient number, since it is larger than the sum of its proper divisors (48927).

53402653 is a wasteful number, since it uses less digits than its factorization.

53402653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48926.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 53402653 is about 7307.7118853989. The cubic root of 53402653 is about 376.5774217086.

The spelling of 53402653 in words is "fifty-three million, four hundred two thousand, six hundred fifty-three".