55866406 has 8 divisors (see below), whose sum is σ = 84176064. Its totient is φ = 27807720.

The previous prime is 55866373. The next prime is 55866407. The reversal of 55866406 is 60466855.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55866407) 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, 62185 + ... + 63076.

It is an arithmetic number, because the mean of its divisors is an integer number (10522008).

Almost surely, 2^55866406 is an apocalyptic number.

55866406 is a deficient number, since it is larger than the sum of its proper divisors (28309658).

55866406 is a wasteful number, since it uses less digits than its factorization.

55866406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125486.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 55866406 is about 7474.3833190438. The cubic root of 55866406 is about 382.2817608199.

The spelling of 55866406 in words is "fifty-five million, eight hundred sixty-six thousand, four hundred six".