55835381 has 4 divisors (see below), whose sum is σ = 63811872. Its totient is φ = 47858892.

The previous prime is 55835369. The next prime is 55835393. The reversal of 55835381 is 18353855.

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 an interprime number because it is at equal distance from previous prime (55835369) and next prime (55835393).

It is a cyclic number.

It is not a de Polignac number, because 55835381 - 2¹⁰ = 55834357 is a prime.

It is a super-2 number, since 2×55835381² = 6235179542830322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55835081) 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, 3988235 + ... + 3988248.

It is an arithmetic number, because the mean of its divisors is an integer number (15952968).

Almost surely, 2^55835381 is an apocalyptic number.

It is an amenable number.

55835381 is a deficient number, since it is larger than the sum of its proper divisors (7976491).

55835381 is an equidigital number, since it uses as much as digits as its factorization.

55835381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7976490.

The product of its digits is 72000, while the sum is 38.

The square root of 55835381 is about 7472.3076087645. The cubic root of 55835381 is about 382.2109819227.

The spelling of 55835381 in words is "fifty-five million, eight hundred thirty-five thousand, three hundred eighty-one".