55576381 has 8 divisors (see below), whose sum is σ = 63604224. Its totient is φ = 47570640.

The previous prime is 55576373. The next prime is 55576447. The reversal of 55576381 is 18367555.

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 55576381 - 2³ = 55576373 is a prime.

It is a super-2 number, since 2×55576381² = 6177468250114322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55576321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276 + ... + 10546.

It is an arithmetic number, because the mean of its divisors is an integer number (7950528).

Almost surely, 2^55576381 is an apocalyptic number.

It is an amenable number.

55576381 is a deficient number, since it is larger than the sum of its proper divisors (8027843).

55576381 is a wasteful number, since it uses less digits than its factorization.

55576381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11051.

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

The square root of 55576381 is about 7454.9568073866. The cubic root of 55576381 is about 381.6190865939.

The spelling of 55576381 in words is "fifty-five million, five hundred seventy-six thousand, three hundred eighty-one".