55771406 has 8 divisors (see below), whose sum is σ = 83710584. Its totient is φ = 27867880.

The previous prime is 55771381. The next prime is 55771409. The reversal of 55771406 is 60417755.

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

It is a super-2 number, since 2×55771406² = 6220899454433672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55771409) 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, 4580 + ... + 11511.

It is an arithmetic number, because the mean of its divisors is an integer number (10463823).

Almost surely, 2^55771406 is an apocalyptic number.

55771406 is a deficient number, since it is larger than the sum of its proper divisors (27939178).

55771406 is a wasteful number, since it uses less digits than its factorization.

55771406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17826.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 55771406 is about 7468.0255757462. The cubic root of 55771406 is about 382.0649497121.

The spelling of 55771406 in words is "fifty-five million, seven hundred seventy-one thousand, four hundred six".