53501843 has 4 divisors (see below), whose sum is σ = 54806808. Its totient is φ = 52196880.

The previous prime is 53501809. The next prime is 53501863. The reversal of 53501843 is 34810535.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34810535 = 5 ⋅6962107.

It is a cyclic number.

It is not a de Polignac number, because 53501843 - 2⁶ = 53501779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53501803) 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, 652421 + ... + 652502.

It is an arithmetic number, because the mean of its divisors is an integer number (13701702).

Almost surely, 2^53501843 is an apocalyptic number.

53501843 is a deficient number, since it is larger than the sum of its proper divisors (1304965).

53501843 is a wasteful number, since it uses less digits than its factorization.

53501843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304964.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 53501843 is about 7314.4954029653. The cubic root of 53501843 is about 376.8104289339.

The spelling of 53501843 in words is "fifty-three million, five hundred one thousand, eight hundred forty-three".