53120643 has 4 divisors (see below), whose sum is σ = 70827528. Its totient is φ = 35413760.

The previous prime is 53120633. The next prime is 53120653. The reversal of 53120643 is 34602135.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (53120633) and next prime (53120653).

It is a cyclic number.

It is not a de Polignac number, because 53120643 - 2¹⁸ = 52858499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53120623) 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, 8853438 + ... + 8853443.

It is an arithmetic number, because the mean of its divisors is an integer number (17706882).

Almost surely, 2^53120643 is an apocalyptic number.

53120643 is a deficient number, since it is larger than the sum of its proper divisors (17706885).

53120643 is a wasteful number, since it uses less digits than its factorization.

53120643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17706884.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 53120643 is about 7288.3909746939. The cubic root of 53120643 is about 375.9133717548.

Adding to 53120643 its reverse (34602135), we get a palindrome (87722778).

The spelling of 53120643 in words is "fifty-three million, one hundred twenty thousand, six hundred forty-three".