55235797 has 4 divisors (see below), whose sum is σ = 55639116. Its totient is φ = 54832480.

The previous prime is 55235767. The next prime is 55235809. The reversal of 55235797 is 79753255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79753255 = 5 ⋅15950651.

It can be written as a sum of positive squares in 2 ways, for example, as 46703556 + 8532241 = 6834^2 + 2921^2 .

It is a cyclic number.

It is not a de Polignac number, because 55235797 - 2¹⁹ = 54711509 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 (55235767) 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, 201454 + ... + 201727.

It is an arithmetic number, because the mean of its divisors is an integer number (13909779).

Almost surely, 2^55235797 is an apocalyptic number.

It is an amenable number.

55235797 is a deficient number, since it is larger than the sum of its proper divisors (403319).

55235797 is a wasteful number, since it uses less digits than its factorization.

55235797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403318.

The product of its digits is 330750, while the sum is 43.

The square root of 55235797 is about 7432.0789150816. The cubic root of 55235797 is about 380.8379408276.

The spelling of 55235797 in words is "fifty-five million, two hundred thirty-five thousand, seven hundred ninety-seven".