53145369 has 16 divisors (see below), whose sum is σ = 79435200. Its totient is φ = 35114688.

The previous prime is 53145361. The next prime is 53145373. The reversal of 53145369 is 96354135.

It is not a de Polignac number, because 53145369 - 2³ = 53145361 is a prime.

It is a super-2 number, since 2×53145369² = 5648860492292322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53145361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5659 + ... + 11760.

It is an arithmetic number, because the mean of its divisors is an integer number (4964700).

Almost surely, 2^53145369 is an apocalyptic number.

It is an amenable number.

53145369 is a deficient number, since it is larger than the sum of its proper divisors (26289831).

53145369 is a wasteful number, since it uses less digits than its factorization.

53145369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17541 (or 17535 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 53145369 is about 7290.0870365175. The cubic root of 53145369 is about 375.9716880184.

The spelling of 53145369 in words is "fifty-three million, one hundred forty-five thousand, three hundred sixty-nine".