53855797 has 4 divisors (see below), whose sum is σ = 53875756. Its totient is φ = 53835840.

The previous prime is 53855777. The next prime is 53855807. The reversal of 53855797 is 79755835.

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 50893956 + 2961841 = 7134^2 + 1721^2 .

It is a cyclic number.

It is not a de Polignac number, because 53855797 - 2¹¹ = 53853749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53855797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53855777) 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, 5154 + ... + 11587.

It is an arithmetic number, because the mean of its divisors is an integer number (13468939).

Almost surely, 2^53855797 is an apocalyptic number.

It is an amenable number.

53855797 is a deficient number, since it is larger than the sum of its proper divisors (19959).

53855797 is a wasteful number, since it uses less digits than its factorization.

53855797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19958.

The product of its digits is 1323000, while the sum is 49.

The square root of 53855797 is about 7338.6508978149. The cubic root of 53855797 is about 377.6395624492.

The spelling of 53855797 in words is "fifty-three million, eight hundred fifty-five thousand, seven hundred ninety-seven".