55773381 has 8 divisors (see below), whose sum is σ = 74932704. Its totient is φ = 36898160.

The previous prime is 55773373. The next prime is 55773449. The reversal of 55773381 is 18337755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55773381 - 2³ = 55773373 is a prime.

It is a super-2 number, since 2×55773381² = 6221340056342322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55773301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70566 + ... + 71351.

It is an arithmetic number, because the mean of its divisors is an integer number (9366588).

Almost surely, 2^55773381 is an apocalyptic number.

It is an amenable number.

55773381 is a deficient number, since it is larger than the sum of its proper divisors (19159323).

55773381 is a wasteful number, since it uses less digits than its factorization.

55773381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142051.

The product of its digits is 88200, while the sum is 39.

The square root of 55773381 is about 7468.1578049744. The cubic root of 55773381 is about 382.0694596060.

The spelling of 55773381 in words is "fifty-five million, seven hundred seventy-three thousand, three hundred eighty-one".