55890406 has 32 divisors (see below), whose sum is σ = 99878688. Its totient is φ = 23120640.

The previous prime is 55890403. The next prime is 55890413. The reversal of 55890406 is 60409855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55890403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19540 + ... + 22216.

It is an arithmetic number, because the mean of its divisors is an integer number (3121209).

Almost surely, 2^55890406 is an apocalyptic number.

55890406 is a deficient number, since it is larger than the sum of its proper divisors (43988282).

55890406 is a wasteful number, since it uses less digits than its factorization.

55890406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 55890406 is about 7475.9886302749. The cubic root of 55890406 is about 382.3364952564.

The spelling of 55890406 in words is "fifty-five million, eight hundred ninety thousand, four hundred six".