55415906 has 64 divisors (see below), whose sum is σ = 107213568. Its totient is φ = 20901888.

The previous prime is 55415881. The next prime is 55415909. The reversal of 55415906 is 60951455.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55415909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 571250 + ... + 571346.

It is an arithmetic number, because the mean of its divisors is an integer number (1675212).

Almost surely, 2^55415906 is an apocalyptic number.

55415906 is a deficient number, since it is larger than the sum of its proper divisors (51797662).

55415906 is a wasteful number, since it uses less digits than its factorization.

55415906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 55415906 is about 7444.1860535588. The cubic root of 55415906 is about 381.2514282487.

The spelling of 55415906 in words is "fifty-five million, four hundred fifteen thousand, nine hundred six".