55695881 has 4 divisors (see below), whose sum is σ = 55732992. Its totient is φ = 55658772.

The previous prime is 55695877. The next prime is 55695889. The reversal of 55695881 is 18859655.

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 55695881 - 2² = 55695877 is a prime.

It is a super-2 number, since 2×55695881² = 6204062320732322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55695889) 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, 16205 + ... + 19338.

It is an arithmetic number, because the mean of its divisors is an integer number (13933248).

Almost surely, 2^55695881 is an apocalyptic number.

It is an amenable number.

55695881 is a deficient number, since it is larger than the sum of its proper divisors (37111).

55695881 is a wasteful number, since it uses less digits than its factorization.

55695881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37110.

The product of its digits is 432000, while the sum is 47.

The square root of 55695881 is about 7462.9673053016. The cubic root of 55695881 is about 381.8924091431.

The spelling of 55695881 in words is "fifty-five million, six hundred ninety-five thousand, eight hundred eighty-one".