53775381 has 8 divisors (see below), whose sum is σ = 78218784. Its totient is φ = 32591120.

The previous prime is 53775361. The next prime is 53775389. The reversal of 53775381 is 18357735.

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 53775381 - 2⁵ = 53775349 is a prime.

It is a super-2 number, since 2×53775381² = 5783583203390322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53775389) 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, 814746 + ... + 814811.

It is an arithmetic number, because the mean of its divisors is an integer number (9777348).

Almost surely, 2^53775381 is an apocalyptic number.

It is an amenable number.

53775381 is a deficient number, since it is larger than the sum of its proper divisors (24443403).

53775381 is a wasteful number, since it uses less digits than its factorization.

53775381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629571.

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

The square root of 53775381 is about 7333.1699148458. The cubic root of 53775381 is about 377.4515084710.

The spelling of 53775381 in words is "fifty-three million, seven hundred seventy-five thousand, three hundred eighty-one".