55735681 has 4 divisors (see below), whose sum is σ = 55758592. Its totient is φ = 55712772.

The previous prime is 55735679. The next prime is 55735699. The reversal of 55735681 is 18653755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55735681 - 2¹ = 55735679 is a prime.

It is a super-2 number, since 2×55735681² = 6212932273067522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55735621) 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, 7305 + ... + 12838.

It is an arithmetic number, because the mean of its divisors is an integer number (13939648).

Almost surely, 2^55735681 is an apocalyptic number.

It is an amenable number.

55735681 is a deficient number, since it is larger than the sum of its proper divisors (22911).

55735681 is a wasteful number, since it uses less digits than its factorization.

55735681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22910.

The product of its digits is 126000, while the sum is 40.

The square root of 55735681 is about 7465.6333287940. The cubic root of 55735681 is about 381.9833536235.

The spelling of 55735681 in words is "fifty-five million, seven hundred thirty-five thousand, six hundred eighty-one".